recursal/Fanatic-Fandom huggingface dataset:
Chapter 196

* Chapter Cover
* WSJ Cover

**Scientist, All Alone** (ひとりぼっちのサイエンティスト, *Hitoribocchi no Saientisuto*) is the one hundred and ninety-sixth chapter of the *Dr. Stone* manga.

## Summary

The chapter begins with Suika determined to revive everyone, writing "e=mc2" in blood onto her poncho. She checks the instructions left behind for methods of recreating the Revival Fluid. She decides to try options 1 and 2 as they are faster processes, leaving 3 in Senku's clothing where she found it.

She the processes she attempts are the Ostwald process and the electrical arc process, neither of which succeed. The science is simply too difficult to attempt with the resources at hand by someone not very experienced. She remembers she has the third option: using feces. Collecting it from various sources, Suika buries it with ashes, following the instructions.

Years later after Suika began making nitric acid, Suika successfully revives Senku who was counting 236,109,753 seconds, over 7 years after everyone got petrified. Suika seems to have grown up a little in that time. Suika apologizes to Senku for taking too long to revive him, but he instead congratulates and praises her for taking such a short time, considering the circumstances. Overjoyed, Suika embraces Senku, happy at the reunion.

## Characters in Order of Appearance

* Suika
* Senku Ishigami
* Kaseki *(Petrified)*
* Hyoga *(Petrified)*
* Chrome *(Petrified)*
* Taiju Oki *(Petrified)*
* Kohaku *(Petrified)*
* Ukyo Saionji *(Flashback)*
* Sulfurina *(Pictured)*
* Ginro *(Petrified)*

## Chapter Notes

* Suika attempts to make nitric acid using Senku's notes.
	+ The first two methods fail.
	+ The third method Suika implements is a modified version of Albert Nodon's method, also sometimes referred as the french method. This method uses decomposing bacteria to convert calcium carbonate into calcium nitrate. Nodon converted this substance into nitric acid by means of electrolysis; while Suika did so by reacting the nitrate with sulfuric acid and then distilling off the nitric acid.
* Suika has grown older and is roughly twice the height she originally was.
* Senku awakens and reveals that it has been 7 years since the second petrification.

## Trivia

* Suika copies the formula on Senku's cloak onto her poncho, a callback to Senku in Chapter 14.
* Senku is wearing a modified version of his outfit, implying Suika stitched together new patches as the cloak got worn down over the years.
Chapter 106

**The Secret of Petrification** (石 (せき) 化 (か) の秘 (ひ) 密 (みつ) , *Sekka no Himitsu*) is the 106th chapter of the *Dr. Stone* manga.

## Summary

Amaryllis tells the story of five years prior, when she and several other villagers attempted to escape the island. They are intercepted by Moz and Kirisame, two of the island's warriors, and are turned to stone via a weapon thrown by the latter, except for Amaryllis, who narrowly avoids it. Through the details given in Amaryllis' story, Senku deduces that the weapon must follow a set of rules, vowing to defeat it.

Amaryllis plans to infiltrate a harem selection done by her tribe in order to steal the petrification weapon. However, she thinks that she requires to actually steal the weapon, and could use the support of a fighter infiltrating the harem alongside in order to do so; though she'd be hard pressed to find a girl who can fight. Following this remark, the men realize Kohaku is a choice and she decides to aid Amaryllis in the infiltration, the only thing getting in the way is Kohaku's crude appearance and manners, as she needs to be ''cute'' enough to ensure she'll be selected. Thus, the Kohaku beautification project begins!

## Characters in Order of Appearance

* Amaryllis
* Head of Petrification Kingdom *(Mentioned)*
* Moz *(Debut)*
* Kirisame *(Debut)*
* Senku Ishigami
* Gen Asagiri
* Soyuz
* Kohaku

## Chapter Notes

* A flashback shows Amaryllis trying to escape the island with her friends.
	+ She barely escapes after Kirisame hits their boat with the petrification device, petrifying all her friends.
* Amaryllis plans to steal it to stop the tyranny by infiltrating the harem.
* They plan to give Kohaku a makeover for the selection process to ensure she gets chosen.
* The Petrification Weapon is revealed.
Chapter 5

**Yuzuriha** (杠 (ゆずりは) , *Yuzuriha*) is the fifth chapter of the *Dr. Stone* manga and its first chapter of the Vs. Tsukasa Arc.

## Summary

To keep Tsukasa from the revival potion, Senku has to think of something. While everyone is preparing for the revival of Yuzuriha, Senku announces that there isn't enough of the cure available. He instructs Taiju to set off to get more. But Tsukasa volunteers, saying "he's the fastest in the group". And that's where Senku wanted him.

During Tsukasa's absence to locate the cave, Senku hurries to make the reviving potion to resurrect Yuzuriha at this moment. Taiju is confused about the whole situation. He asks why he sends Tsukasa away when there is enough. But without Senku explaining everything, Taiju relies on Senku's decision.

Yuzuriha breaks free! In despair and tears, Taiju apologizes for having to wait 3700 years. Yuzuriha has no idea, but thanks for her rescue. Senku interrupts the reunification, saying that they must make a decision before Tsukasa returns and that there are only two of them: "Plan A! Run away immediately, and live somewhere far from here", meanwhile you can see Tsukasa storming, "Plan B! We all fight to stop the murderer Tsukasa. With all the powers of civilization!"

## Characters in Order of Appearance

* Tsukasa Shishio
* Senku Ishigami
* Taiju Oki
* Yuzuriha Ogawa

## Chapter Notes

* Senku pretends they need more nitric acid for the Revival Fluid.
	+ He gives away the position of the Cave of Miracles to Tsukasa to hide the recipe.
* Yuzuriha is revived.
* Senku explains that Tsukasa doesn't want to save all of humanity, and that Taiju and Yuzuriha have two options going forward.

## Trivia

* Senku explains the process of revival and the reason for the duration "that it is a kind of cold sleep" with a hypothesis from a whole year of experiments. "It's a sort of protective coat created from the trace metallic elements within the body. It keeps this petrified state by a mysterious shift of the element's phase. Then, if we break through ... this coat by seeping it with nital, it spreads throughout the entire body through a chain reaction! And the petrifcation will be released!"
Episode 40

**Science Vessel Perseus** (科学船ペルセウス, *Kagakusen Peruseusu*) is the fortieth episode of the *Dr. Stone* anime, and the fifth episode of the third season.

## Summary

Thanks to Chrome's discovery, the Kingdom of Science has acquired a mine and founded its distribution network of iron and oil needed for minecarts, paved asphalt roads, all the necessary routes required for the ship roadmap. But the motorized sailboat project itself turns out more technically difficult than expected, forcing Senku to change plans before Ryusui steps in and proposes a revision to the blueprints. The shipbuilding project soon reaches its climax!

## Plot Details

Even with Kaseki’s skills, the ship proves impossible to assemble accurately. Ryusui recreates a scale model of a ship, allowing Senku to use a Pantograph to accurately copy the ship pieces to the accurate size and shapes. Ship construction begins running smoothly but the engine requires Senku’s absolute focus during its construction as a single mistake could cause an explosion. Almost a year later, the ship is finished. As it may be the last time they are all together, Minami insists on a commemorative photograph to mark the launching of the ship Perseus on the 10th of September, 5741 AD. After careful consideration, the Perseus’ crew is made up of Ryusui, Senku, Chrome, Kaseki, Yuzuriha, Ukyo, Francois, Kohaku, Magma, Taiju, Nikki, Yo, Gen and Kinro. As they are too dangerous to leave behind, Senku brings Hyoga and Homura in the ship's brig. Ginro fakes bravery by pretending to swim after the ship, hoping to impress Ruri, only to be hauled aboard by Taiju, dooming him to join the crew. Before starting the voyage to South America, Senku intends to find the island where his father Byakuya returned to earth with the other astronauts and locate something vital for their mission, the crashed Soyuz rocket.

## Characters

KINGDOM OF SCIENCE:

* Gen Asagiri
* Chrome
* Francois
* Ginro
* Nikki Hanada
* Minami Hokutozai
* Senku Ishigami
* Kaseki
* Kinro
* Kohaku
* Magma
* Ryusui Nanami
* Yuzuriha Ogawa
* Taiju Oki
* Ukyo Saionji
* Mirai Shishio
* Suika
* Yo Uei

VILLAGERS:

* Mantle
* Ruri

ANTAGONISTS:

* Why-man

PICTURED:

* Hyoga
* Jasper
* Homura Momiji

FLASHBACK:

* Byakuya Ishigami
* Connie Lee
* Yakov Nikitin
* Darya Nikitina
* Shamil Volkov
* Lillian Weinberg

## Inventions and Discoveries

* Camera Timer
* Perseus

## Anime to Manga Differences

* During Ryusui's flashback, the part where he constructs his own racecourse is altered to have omitted Senku, Taiju and Yuzuriha around the area at the same time, doing their rocket project.
* Extra scenes were added during Minami's journal of the revised project.

## Trivia

* The episode was named after Chapter 102 again but with literal translation.
* The opening was shifted as an inserted during the Perseus crew announcement scene.
Chapter 204

**The Universe is Written in the Language of Mathematics** (宇 (う) 宙 (ちゅう) は数 (すう) 学 (がく) という言 (げん) 語 (ご) で書 (か) かれている, *Uchū wa Sūgaku to iu Gengo de Kakarete iru*) is the two hundred and fourth chapter of the *Dr. Stone* manga.

## Summary

The chapter begins with the Perseus penetrating the dam blocking the Suez Canal passage. Kohaku asks the significance of Math City, to which Ryusui responds that extremely accurate calculations are needed to ensure that the space mission goes according to plan. He adds that the math education in India couldn't be beat, and that Nanami Corp. set up a university to cultivate their human resources there. He also hopes to find Sai.

On October 1st, 5750, the Perseus arrives in India and the team quickly collect spices such as cardamom and cumin to make curry. Over the meal, Kohaku says that she's glad they didn't have to wait, otherwise she'd be the older sister between her and Ruri. Suika gets worried about the statues breaking, however Kohaku assures her that Ruri would have ensured everyone was in a safe position.

The team try to locate Sai using Ryusui's knowledge of him and Chelsea's and Senku's combined science power to figure out how the land changed. They quickly find him, dress him, and revive him. Sai is initial thankful for being saved, however the moment he lays eyes on Ryusui he begins screaming and running. Ryusui asks that he be caught, and Kohaku quickly pins him with her leg.

Sai protests from the floor, ranting about fleeing from Japan and never returning to Nanami Corp. as long as Ryusui was around. Sai then reveals that Ryusui is his younger brother.

## Characters in Order of Appearance

* Chelsea Childe
* Ryusui Nanami
* Chrome
* Kohaku
* Senku Ishigami
* Suika
* Kaseki
* Gen Asagiri
* Francois
* Ruri *(Mentioned)*
* Sai Nanami *(Debut)*

## Chapter Notes

* The team successfully break through the dam.
* The Perseus arrives in India on October 1st, 5750.
* Math City is needed to perform the intense and accurate calculations for the space mission.
* It was approximately 9:30 A.M. when India was petrified.
* The team collect statues from around the school.
* Ryusui's older brother Sai is introduced.
	+ He does not seem to like Ryusui.
	+ Sai also states he ran away from the Nanami Corp.

## Trivia

* When Sai is found, he is on top three other statues with their arms out; in homage to an Indian deity.
* Kohaku makes another subtle jab at Chrome's love for Ruri.
Chapter 54

* Chapter Cover
* WSJ Cover

**Flickering Blue Jewel** (瞬 (またた) きのブルージュエル, *Matataki no Burū Jueru*) is the fifty-forth chapter of the *Dr. Stone* manga.

## Summary

Chrome is excited to have new equipment and wants to go spelunking, stating that he is much better at it than Senku, though the latter points out that they don't need any new minerals. After Chrome insisted, he was sent to look for copper as it's always useful in electronics.

Their attempt at a vacuum tube cracked from the base where the copper leads went through the glass; due to the expansion of the copper wires from heat, causing the glass around them to break. Gen is shook about the level of precision they are dealing with, since the microscopic expansion of the copper led to this, and Kaseki says "as usual, nothing ever goes right on the first try for us" so they set on to work on a solution.

Chrome comes back with a new stash of native copper right when it came handy to carry out the solution they were planning on, which is replacing the wires in the seal with hollow copper tubes which expand inward, removing stress from the glass.

The solution works, but the new issue is that the bamboo filament can't get hot enough for the tube to work in any usable way, vaporizing away. Senku points out that they've hit a dead end, since no resources they have in their primitive world would make a better filament.

The villagers comb through Chrome's collection despite this remark, seemingly to no avail.

Gen takes everyone to see the sunrise of the new year, when a rock found by Suika in Chrome's stash starts glowing blue on the ultraviolet sun rays of dawn. Her discovery is scheelite, a rare ore of Tungsten; a metal with the highest melting point of any.

## Characters in Order of Appearance

* Chrome
* Senku Ishigami
* Kohaku
* Kaseki
* Ginro
* Gen Asagiri
* Shovel
* Suika
* Ruby
* Sapphire
* Kokuyo
* Kinro
* Magma

## Chapter Notes

* Chrome goes spelunking on his own to get copper and other materials.
* Kaseki and Senku struggle to make vacuum tubes.
	+ They lack tungsten, a necessary material for the filaments.
* Suika checks Chrome's collection for rare rocks.
	+ Suika brings the rare rock up the mountain to watch the first sunrise of the year.
	+ The rock begins glowing, showing the presence of sheelite, a tungsten ore.
* To get more, Senku organizes a spelunking team of himself, Chrome, and Magma.

## Trivia

* The vacuum tube has a filament that blasts electrons off when heated to a high temperature, its ability to amplify signals makes it the heart of the cellphone.
* Scheelite shines blue under a blacklight (UV light).
* Tungsten is the element with atomic number 74, with the highest melting point of all metals, historically used in filaments of incandescent light bulbs and vacuum tubes.
Chapter 21

**Dawn of Iron** (鉄 (てつ) の夜 (よ) 明 (あ) け, *Tetsu no Yoake*) is the twenty-first chapter of the Dr. Stone manga.

## Summary

The group collect iron sand from the nearby riverbed using small magnetized rocks. Kohaku works hard while Senku and Chrome laze around. She soon calls them out on it and forces them to work, though Senku still mentions that it will take them ages to collect enough, and no one from the village would come to help since they are both seen as shady sorcerers.

A while later, a watermelon is spotted floating downstream towards them. Suddenly it lifts from the water revealing a young girl wearing it as a helmet. Her name is Suika, and she's offering to help collect the iron sand. Senku is glad for her help, and Suika immediately likes him for not asking about her helmet.

Suika gets excited and puts all her effort into collecting sand. Chrome watching her float in the river warns her that she's not Momotaro, and not to drown. Senku asks how they know Momotaro, and Chrome explains that it's part of the 100 Tales told by Ruri. Senku establishes that the story of Momotaro that the villagers had been told was different from the one Senku knows, which makes him very curious about Ruri.

Chrome asks what Senku meant by interested in Ruri, and Kohaku takes Senku aside to tell him that Chrome has a crush on her. Senku understands, and ignores Chrome's protests. Later, Senku wants to enter the village to ask Ruri questions, however Kinro blocks him from entering since he's an outsider.

They try to make iron using charcoal and a furnace, however pumping enough oxygen into it to raise the temperature adequately is exhausting. Ginro wants to go see what they're doing by Chrome's hut, but Kinro stops him. Ginro argues that Kinro's simply already been bought with the pretty golden spear.

A while later, everyone's already collapsed from exhaustion. The furnace is opened revealing the sand did not smelt into iron. Senku then decides they'll need more manpower for the iron forge to work, and assigns Suika the task of gathering information.

## Character of Order in Appearance

* Chrome
* Senku Ishigami
* Kohaku
* Suika *(Debut)*
* Ruri
* Kinro
* Ginro

## Chapter Notes

* Iron sand is collected.
* Suika is introduced.
* The villagers know a different version of Momotaro than Senku does.
* They try making iron, but cannot keep up the required temperature.
	+ Senku wants to recruit more manpower.
Chapter 33

**Baaad Chemicals** (ヤベー薬 (くすり) , *Yabē Kusuri*) is the thirty-third chapter of the *Dr. Stone* manga.

## Summary

The group return from the sulfur lake with several jars of sulfuric acid. With that, they have most of the basics they need to begin working on the sulfa drug for Ruri. They go through several steps to create hydrochloric acid, chlorosulfuric acid, and sodium hydroxide. Senku's comments on how dangerous each of the chemicals are concerns Kohaku, who asks if they plan to make her sister drink it. Senku assures her that it won't be toxic when she takes the final form. They then get ammonia from urine, which concerns Kohaku further.

The final ingredient they need is alcohol, and Kaseki mentions that they could probably get a ton of it if they win the Grand Bout tomorrow. They get excited by this prospect.

The next morning, Kokuyo checks that the preparations are all going accordingly, and Turquoise admits that there is one problem: Kohaku signed up, but even worse, Senku had joined as well. Since there's nothing in the rules against it, they can't refute them joining. Even Senku's friends are surprised he joined, but him and Ginro are trying to find as many ways to push the rules as possible, and even try getting Kinro in on it.

Senku steps foot in the village, and for the first time Ruri hears his name. She begins descending the stairs of the chief's hut, seemingly knowing his name somehow.

## Characters in Order of Appearance

* Ginro
* Kaseki
* Chrome
* Suika
* Chalk
* Kohaku
* Kinro
* Kaseki
* Magma
* Mantle
* Kokuyo
* Ruri
* Turquoise
* Jasper

## Chapter Notes

* The group return from the sulfur spring with sulfuric acid.
* Work begins on the sulfa drug.
* The Grand Bout is tomorrow, and they plan to win it to get the alcohol they need.
* Ruri recognizes Senku's name.
Chapter 29

**Senku's Lab** (SENKU'S (センクウズ)  LAB (ラボ) , *Senkūzu Rabo*) is the twenty-ninth chapter of the Dr. Stone manga.

## Summary

Having acquired the raw materials for glass, Chrome and Senku begin mixing and melting the components. They make a glass kiln with obsidian foam insulation. Their first few attempts at blown glass collapse, making a weird mess. Senku admits he saw this coming, since it took him months to get used to making pots, and they're not artisans. Hearing the word artisan, Chrome captures and brings the village artisan Kaseki over to their science base.

He's initially annoyed by the kinky treatment, but Senku asks about his work, such as Kohaku's shield and the bridges. A moment later, Kaseki notices the glass and asks about that. Knowing it's irresistibly interesting to craftsmen, Chrome and Senku begin showing their glassblowing skills. Kaseki gets more and more worked up by how awful their techniques are before exploding out of his ropes and grabbing one of the glassblowing pipes.

Almost immediately, Kaseki's skills shine, and with Suika's help Kaseki begins making flasks. The others begin building a new lab to house the glassware, and soon they have a chemistry lab. Meanwhile, Ginro and Kinro trai. Ginro asks if having a shiny spear-tip would help Kinro judge distance better, and the pair go to ask Senku if he can do anything. Senku says sure, but that he'll be making a silver one this time for some deadly goal.

## Characters in Order of Appearance

* Ruri *(Flashback)*
* Senku Ishigami
* Chrome
* Suika
* Kohaku
* Kaseki
* Kinro
* Ginro
* Ganen
* Chalk

## Chapter Notes

* With Kaseki's help, glassware is made.
* A chemistry lab is acquired.
* Senku plans to make Ginro a silver spear.
Chapter 150

**Righteous Science-User** (正 (せい) 義 (ぎ) の科 (か) 学 (がく) 使 (つか) い, *Seigi no Kagaku Tsukai*) is the 150th chapter of the *Dr. Stone* manga.

## Summary

Descending down a river, Senku's group discusses a new threat posed by the culprit behind the machine-gun attack. Senku and the group deduce that the attacker was likely de-petrified on their own like him and that their scientific tools are more advanced than the groups.

In the midst of the discussion, Ukyo notices an engine sound coming from above. After a brief argument of what should be done, they increase their descending speed whilst being assaulted by another machine gunfire. Ginro panics as Matsukaze is grazed and Yo desperately tries to shoot the plane above with Hyoga telling him it's pointless and a waste of ammo. Soon after, Senku quickly combines water and calcium carbide to form acetylene gas, which he then gives to Kirisame who throws it at the plane, knocking the engine down and making the plane crash, much to the pilot's amusement.

After they come out of the crashed plane, the mysterious attacker explains to the person on the other end of their communication device how the attack was carried out. Senku's enemies conclude that the opposing group has an experienced scientist just like the pilot.

Once things have calmed down, a scared Ginro suggests running away as their foes might bring reinforcements now that their attack has failed, while Senku and Ryusui gleefully disagree and suggest they take the crashed plane before reinforcements arrive. As they drag the stolen plane down the river, Senku and Ryusui celebrate, having captured a part of their enemy's firepower.

## Characters in Order of Appearance

* Senku Ishigami
* Tsukasa Shishio
* Ryusui Nanami
* Matsukaze
* Ginro
* Kinro
* Ukyo Saionji
* Kirisame
* Moz
* Kohaku
* Suika
* Gen Asagiri
* Chrome
* Yo Uei
* Homura Momiji
* Magma
* Hyoga
* Taiju Oki
* Unidentified Attacker

## Chapter Notes

* The Kingdom of Science acquires the plane of the enemy.
	+ Ryusui wants it for luxury traveling.
	+ Senku wants it to learn how to reverse-engineer the technology.
* The person in the plane has a radio and cigarettes.
* The face of the revived American is seen. However, their name and gender are unknown.
	+ There appear to be more revived people in America.
	+ The people of America have created communicators.
		- Given the level of technology, the Americans likely revived quite a few years before Senku did.
	+ It seems they have mistaken the Kingdom of Science for the true enemy.
Chapter 116

**Miracle in Hand** (奇 (き) 跡 (せき) はこの掌 (てのひら) で, *Kiseki wa Kono Tenohira de*) is the 116th chapter of the *Dr. Stone* manga.

## Summary

With the platinum acquired, Senku constructs a device to produce nitric acid, securing the ability to produce the depetrification formula.

Elsewhere, Ibara discovers the broken bottle, making the connection that there must be an intruder in the village.

Senku and the Science Team set out to revive Kaseki, but are unable to reach him before his petrified body is thrown overboard the Perseus. In order to ensure they can find the stone shards underwater, they switch their target to Ryusui, but his body taken by Ibara and Oarashi to weed out the intruder.

In order to obtain Ryusui's body, Senku has Kohaku publicly break the statue into multiple pieces and transport them back to him via the Motor-powered Car.

With Ryusui's body re-assembled, Senku revives him, the two setting their next goal towards reviving Kaseki.

## Characters in Order of Appearance

* Gen Asagiri
* Soyuz
* Suika
* Senku Ishigami
* Ibara
* Kaseki (Petrified)
* Oarashi
* Ryusui Nanami
* Ginro
* Amaryllis
* Kohaku

## Chapter Notes

* **Nitric acid acquired!!** Senku creates nitric acid via a complex "Rube Golderg"-esque device that uses ammonia and platinum. This is known as the Ostwald process.
* Ryusui is revived again from Petrification, making him the first known person to be fully revived twice.

## References

1. ↑ https://en.wikipedia.org/wiki/Ostwald\_process
Chapter 135

**Counting** (COUNTING (カウンティング) , *Kauntingu*) is the 131st chapter of the *Dr. Stone* manga.

## Summary

Ibara is flabbergasted Senku survived, he questions this because the island was engulfed. Senku taunts him on believing he won.

A flashback revealed Chrome came up with a plan intended to let Senku estimate the speed of the petrification, by taking note how how long it took for everyone to get petrified while standing in a line more or less evenly spaces apart. Senku who was debating on this caught on and used his counting skill measure the timing and calculate when he should toss a bottle of revival fluid into the air to save himself after being engulfed.

After silently thanking his friends, he tries to get the device from Oarashi but can't break the statue. He notices Ibara approaching before deciding to set a trap.

## Characters in Order of Appearance

* Senku Ishigami
* Ibara
* Chrome
* Ryusui Nanami
* Kaseki
* Gen Asagiri
* Nikki Hanada
* Magma
* Oarashi

## Chapter Notes

* It is revealed Chrome's plan was to track the time for the petrification, so Senku could measure it.
	+ Using his counting skill, Senku deduced the time and poured the formula on himself.

## Trivia

* Ibara becomes the second person in the stone world to get hit by a car (the first being Magma).
Chapter 172

* Chapter Cover
* WSJ Cover

**Marked with an X of Wisdom** (叡 (えい) 知 (ち) の道 (みち) 標 (しるべ) , *Eichi no Michishirube*) is the one hundred seventy second chapter of the *Dr. Stone* manga.

## Summary

The chapter begins with the escaping team discussing their plans. Some are excited to find the source of the Petrification, but others are worried about traversing the Amazon. Senku wants to take the long way around, picking up fuel periodically as they circumnavigate South America, as it is safer. The problem is, Stanley is chasing them, and with a much faster vessel.

On one of their refueling stops, Taiju spends some extra time chopping trees so everyone else can take a break. While cutting, he notices giant glowing letters in the sky spelling "HELL" and immediately rushes over to everyone else to tell them Why-man has made an appearance. Looking closer, the team discover they're kites with writing on them.

In the morning, they go seek out where the kites are tied to, and find a pumpkin shack high in a pair of trees. Chelsea hops down, clothed in a giant pumpkin. Relieved there's other people around, Chelsea immediately jumps to hug Suika.

After receiving a set of glasses and proper clothing, Chelsea introduces herself to everyone, Xeno knowing her from the meeting they were at before the petrification happened. She hadn't found the American Colony because her eyesight was too bad to read the sign, and she had gone south instead. Her kites were also meant to spell "HELP", but she ran out of paint.

Sensing an opportunity, Senku asks her if she knows a shortcut through the Amazon which she does, but simply going by foot is a death sentence. She suggests motorcycles, and Senku's says they'll have to build them.

## Characters in Order of Appearance

* Senku Ishigami
* Gen Asagiri
* Tsukasa Shishio
* Ukyo Saionji
* Kohaku
* Suika
* Kaseki
* Luna Wright
* Ryusui Nanami
* Francois
* Xeno Houston Wingfield
* Stanley Snyder
* Chelsea Childe *(Debut)*

## Chapter Notes

* Senku plans to reach the source of the petrification by circumnavigating South America.
	+ The group have to keep stopping in order to get more fuel for their voyage.
* Chelsea the geographer is introduced.
	+ She is familiar with Xeno from meeting at the Science Expo thousands of years ago.
	+ She overheard Stanley’s order and stayed conscious for thousands of years, but couldn't read the sign telling her to go north.
	+ She revived three years after Xeno and the other early Americans.
	+ She endured a full year alone while suffering from nearsightedness.
* Chelsea knows a land-based shortcut to get to the source of the petrification.
Author's Notes

Below is a list of all the notes that Boichi and Riichiro Inagaki have written for each volume.

## Volume 21

I designed the ropeway so that it was A) realistic, given the resources that Senku and pals actually possess, and B) an absolute blast to ride. It also had to be clear that Senku was prioritizing his friends' safety, which is the same with all his inventions. These are essential aspects of everything Senku creates.**2. Medusa Wave-Tactics Site
I deliberately stopped to think about how a sudden deluge of hyper-tech devices from the sky would ultimately pile up on the ground, assuming they were bumping into each other a little on the way down. Furthermore, because I'm a fan of Central and South American civilizations, I was sure to include an homage to those cultures via the shape of the pile. Finally, because the Medusa devices put out such a vast amount of energy, I showed how the surrounding plants and inorganic matter were transformed by the incident.**3. Senku's Masada
Not your typical fortress, but rather one designed to counter enemies armed with guns and gunpowder. I was also influenced by Roman military camps found in Germany. You'll notice elements that evoke the feel of Ishigami village, since some of the villagers are part of this group. Wherever they go, people bring pieces of themselves.*
Chapter 59

**Voices from Here to Eternity** (声 (こえ) は無 (む) 限 (げん) の彼 (か) 方 (なた) へ, *Koe wa Mugen no Kanata e*) is the fifty-ninth chapter of the *Dr. Stone* manga.

## Summary

With the radio wave part of the cellphone completed, Senku begins creating the mic. The mic itself is a crystal of Rochelle salt capable of turning sound into electricity, mounted on a plastic horn. With that, the cellphone is complete. Kohaku then asks who is going to hear them, making everyone realize they need to make a second cellphone.

Senku says it's not as bad as it seems, because they can show its capabilities using a landline. Kaseki worries that his vacuum tube wasn't made correctly, while Ginro eggs Chrome on about making the first ever Stone World phone call count. With Ruri on the other end, Chrome tells her that science is awesome, making everyone else facepalm.

The villagers are amazed by the phone, and a few of the younger children exclaim that it's just like a bee. This confuses the modern-timers, and Ruri explains that it's part of one of the 100 Tales. Senku notices that the story doesn't impart any important information, and realizes that Byakuya's gravestone contains a glass record.

They go and collect the record, ready to play it.

## Characters In order Of Appearance

* Senku Ishigami
* Suika
* Ruri
* Kohaku
* Kaseki
* Gen Asagiri
* Chrome
* Kinro
* Ginro
* Kokuyo
* Magma
* Byakuya Ishigami
* Connie Lee
* Shamil Volkov
* Lillian Weinberg
* Darya Nikitina
* Yakov Nikitin
* Nikki Hanada
* Ukyo Saionji
* Yo Uei
* Homura Momiji
* Hyoga
* Tsukasa Shishio

## Chapter Notes

* The cellphone is completed.
* The cellphone is tested by landline by Ruri and Chrome.
* Byakuya left a record for Senku.

## Trivia

* The cover page shows a Voyager space probe.
	+ The two probes of the Voyager program launched in 1977 to study the outer solar system. They famously carry each a golden record containing sounds, images and other information about earth and humanity. Voyager 1 and Voyager 2 crossed the heliopause in 2012 and 2018 respectively, becoming the first spacecraft to leave the solar system into interstellar space. Both spacecraft will not pass within a few lighyears of other stars for around 40000 years.
* The microphone is based on a crystal of Rochelle salt, which exhibits a property called piezoelectricity. This means that when the crystal is compressed or bent, it produces an electric field around it, which can produce an electric current when sandwiched between two electrodes.
	+ Devices such as earphones, microphones and gramophone pickups were initially experimented with at Bell Labs in 1919 and saw some use in the early 20th century, however these devices did not have a long life, as the crystals are hygroscopic. They absorb water from the air and stop working.
Chapter 219

**Three Heroes** (三 (さん) 勇 (ゆう) 士 (し) , *San Yūshi*) is the two hundred and nineteenth chapter of the *Dr. Stone* manga.

## Summary

The astronaut selection process for the moon mission begins. As the space expert, Xeno is chosen as the overseer and main selector. Everyone is told that for the majority of the flight, the astronauts will be petrified so they can simplify the life support systems. Due to the unknown nature of Why-man, new astronauts rather than ones from before the first Petrification will be chosen. The roles to be filled are a warrior, a scientist, and a pilot.

As the only pilot, Ryusui is chosen for that role. The scientist, as Xeno must stay as ground control, is Senku, however he needs physical training. They begin by doing the same clothed swimming test that Byakuya had struggled with in the past. As Senku struggles, Nikki helps train him up.

Meanwhile, the other members of the Kingdom of Science stationed around the globe return to their homes, and thus the warriors left in Corn City come back for the selection trials.

After the physical tests, a test of concentration is given to the candidates. Equilibrium trials and other physical trials continue as they whittle down the candidates. Tsukasa is easily the best of the bunch, but Kohaku fares quite well as well.

That evening, Tsukasa calls Kohaku to meet him on a cliff. They begin fighting abruptly, with Kohaku in disbelief that Tsukasa would betray them at this point. He says he's not, simply that he wished to test her skills. He tells her that their skill gap isn't as great as she thinks, thanks to science.

The final roster for the moon mission is Ryusui as the pilot, Senku as the scientist, and Kohaku as the warrior.

## Characters in Order of Appearance

* Why-man *(Mentioned)*
* Taiju Oki
* Suika
* Yo Uei
* Kohaku
* Chelsea Childe
* Xeno Houston Wingfield
* Gen Asagiri
* Senku Ishigami
* Ukyo Saionji
* Ryusui Nanami
* Chrome
* Nikki Hanada
* Yuzuriha Ogawa *(Pictured)*
* Ginro *(Pictured)*
* Ruri *(Pictured)*
* Matsukaze *(Pictured)*
* Tsukasa Shishio
* Hyoga
* Magma
* Kinro *(Pictured)*
* Byakuya Ishigami *(Flashback)*
* Sai Nanami *(Pictured)*

## Chapter Notes

* The astronaut selection process begins.
	+ Ryusui is automatically chosen as the pilot.
	+ Senku is chosen as the scientist, but needs a lot of physical training before he can go.
* The members of the Kingdom of Science that were stationed around the world have returned to Japan.
* Various tests are done to sort the warriors' suitability.
	+ Tsukasa notes that Kohaku has drastically improved since their first fight.
* Kohaku is chosen as the warrior on Tsukasa's recommendation.

## Trivia

* Tsukasa's scar appears and disappears throughout the whole chapter.
Chapter 73

**Top-Secret Mission** (極 (ごく) 秘 (ひ) のミッション, *Gokuhi no Misshon*) is the seventy-third chapters of the *Dr. Stone* manga.

## Summary

Chrome reunites with the Kingdom of Science after escaping from his holding cell in the Tsukasa Empire.

After reuniting with the Kingdom of Science, Chrome explains that he believes he got support from Taiju's group, as in order to escape he used the battery he found someone had left next to him when he woke up. Senku reacts to say that Taiju being a blockhead would 10 Billion Percent fail at doing something along those lines, and that even Yuzuriha would't have been able to accopmlish that task either due to the secret mission Senku had given her prior to them splitting up.

Regards to what Senku said, Chrome is pleased that he was able to escape from the prison cell. Kaseki is overjoyed with the outcome, as his tank will no longer to be thrown out for Senku to immediately say "We will be driving this Tank head first into the "Cave of Miracles".

Senku and Gen then begin there task of becoming a imposter of Lillian Weinberg and playing her song to trick Tsukasa's Army into switching to the Kingdom of Science or risk being destroyed by all of Americas "Rebuilt forces"

The plan goes of without a hitch fooling many people to the point they are shown cheering and crying in joy of hearing Lillians voice, until Ukyo hears the receiving phone call transmission and immediately knows what's going on.

Ukyo knowing it is a that the recording is a charade and someone imposing on Lillian he speaks in English to Senku and Gen that he has found there bluff and called them out on being imposters knowing full well Gen is behind the voice.

Gen and Senku panic upon relaizing that Ukyo caught them, but they are also confused and suspicious of Ukyo's sudden use of English to call them out. They connected the dots and figured that maybe Ukyo was the person to give Chrome the battery for his escape.

It is shown that Ukyo is not a ally but is certainly intrigued in their true plans on what they are doing in the Stone World compared to Tsukasa's ideals as he has seen Senku's Top Secret Mission he had given Yuzuriha, Which was to glue all the broken statues that Tsukasa had broken in the hopes that the revival fluid could bring them back to life despite being previously broken.

Thus making Ukyo extremely intrigued in Senku's plans.

## Characters in Order of Appearance

* Kinro
* Chrome
* Ginro
* Suika
* Kohaku
* Senku Ishigami
* Yuzuriha Ogawa
* Hyoga
* Tsukasa Shishio
* Magma
* Nikki Hanada
* Taiju Oki
* Lillian Weinberg
* Unnamed EoM Characters
* Gen Asagiri
* Ukyo Saionji

## Chapter Notes

* Taiju's group get more followers with help from Nikki.
* It is revealed Senku told Yuzuriha that she can reassemble the statues to restore them.
	+ Yuzuriha has been rebuilding statues in secret, under the guise of creating clothing.
* Ukyo reveals that he gave Chrome the battery.
En

En
--

* Anime
* Manga

**En** (エン, *****En*****) is one of the villagers of Ishigami Village. She is the wife of Sagan and the mother of Ganen.

## Appearance

En is a short, fat woman with bobbed blonde hair with two-tiered bangs, the middle part being the shortest and the sides curling inwards. Her eyes are small and almond-shaped, and her eyebrows are of uniform thickness and arched. She has a small nose. Her mouth has no visible lips, but has pronounced nasolabial folds at the corners of her mouth and dimples on both sides. En's face shape is oval with large cheeks and a double chin.

She wears the village rope around her neck, tied at the front. Her dress is sleeveless with a high collar, and the same shade of olive-green as Sagan's tunic.

## Personality

Like Ganen, En seems to prioritize food and be a gourmand. Unlike her husband, however, she seems to be a rather happy, joyful person and is always shown smiling.

## Synopsis

En is first shown commenting on the outsider who arrived outside Ishigami Village. Her theory is that Senku is somehow connected to the criminals the villagers had banished some time "from way back". In the anime, En insists her theory is correct and goes so far as to say that she bets her next meal on it. Whether she actually followed through with this is unknown. The next time we see her is when she is sitting in a hut with her husband and son, eating skewered fish over a fire and discussing said fish.

## References

1. ↑ Dr. Stone Manga — Chapter 193, En is petrified along with the rest of the world.
2. ↑ Dr. Stone Manga: Chapter 20
3. ↑ Dr. Stone Anime: Episode 8
4. ↑ Dr. Stone Manga: Chapter 22
Chapter 171

**Staring at the Same Light** (同 (おな) じ光 (ひかり) を見 (み) て, *Onaji Hikari o Mite*) is the one hundred seventy first chapter of the *Dr. Stone* manga.

## Summary

The chapter begins with Xeno and Senku collecting their knowledge of the Petrification and Why-man. Xeno is allowed to listen to Byakuya's record and wistfully recalls all of them. While everyone else on the ship is happy to just let them discuss science together, Chrome is eager to listen in on the scientists' conversation. Sneaking in using snacks as an excuse, he finds both of them blowing giant bubbles. Kaseki appears with a globe, and the scientists begin testing.

Using the bubbles, they plan to estimate the source of the petrification as it expands radially, similarly to blowing a bubble. They explain the scientific method to Chrome using an example of ghosts before getting to the real topic. Comparing the direction and time that Senku and Xeno got individually petrified along with the height of the ISS that didn't get hit, they can pinpoint the source of the beam.

At some point, Kohaku walks in to check on them, finding them all playing with bubbles as before and retreats. They establish that it travels at 32,000 kph, and that they're looking for a point 8,181 km farther away from Senku than Xeno at the time of petrification. The result? 3° 7' South latitude, 60° 1' West longitude is the origin of the beam.

## Characters in Order of Appearance

* Senku Ishigami
* Gen Asagiri
* Ukyo Saionji
* Kohaku
* Suika
* Kaseki
* Luna Wright
* Ryusui Nanami
* Francois
* Xeno Houston Wingfield
* Byakuya Ishigami *(Flashback)*
* Connie Lee *(Flashback)*
* Darya Nikitina *(Flashback)*
* Lillian Weinberg *(Flashback)*
* Shamil Volkov *(Flashback)*

## Chapter Notes

* Senku and Xeno collate information to pinpoint the source of the petrification.
	+ Xeno listens to Byakuya's record.
* Chrome joins them after catching them blowing bubbles.
* The source of the petrification is found to be at 3° 7' South latitude, 60° 1' West longitude using the following data points:
* Senku was petrified at 12:40pm, and Xeno was petrified at 8:25pm.
* Accounting for time zones, there was a 15 minutes and 20 second gap between their respective petrificaitons.
* The petrification beam is affected by gravity, and did not reach the ISS.
* The time between seeing it on the horizon and the beam reaching them was 56 seconds.
* The beam is estimated to be 20,000 meters tall.
* The beam travels at 32,000 kph.
* The beam approached Xeno at east-southeast (110° on the compass), and Senku at north-northeast (33-34° on the compass).
Chapter 81

**Fingertip** (FINGERTIP (フィンガーチップ) , *Fingāchippu*) is the eighty-first chapter of the *Dr. Stone* manga.

## Summary

With Tsukasa gravely injured, Hyoga points out that they have no chance of winning, as he is now the strongest primate of the Stone World. Senku agrees, which is why he wants to properly team up with Tsukasa to defeat Hyoga.

Tsukasa distracts Hyoga while Senku sets something up: a trail of gunpowder leading straight to Hyoga. Tsukasa dodges while Hyoga is caught in the flames, but Hyoga rips off his cape and fans the flames outwards, rendering it ineffective. He lunges towards Senku and hits him squarely in the stomach, sending him flying backwards. Tsukasa continues fighting him until he falls to the ground, Hyoga's spear pinning his neck. Hyoga asks why he's fighting, and Tsukasa responds that he just wants to fight for one minute more.

In the background, Senku crawls his way over to where the other two are, and tells Hyoga that he'll knock him out with just his pinkie. Hyoga notices too late that Senku has bandages wrapped around his finger and that he'd lit the gunpowder too quickly. Hyoge gets heavily shocked.

## Characters in Order of Appearance

* Senku Ishigami
* Hyoga
* Tsukasa Shishio

## Chapter Notes

* Tsukasa and Senku continue to fight Hyoga.
* Tsukasa buys time.
* Senku tries to use gunpowder but it's not effective.
* Senku shocks Hyoga with a stun-gun.
* Hyoga is defeated.

## Trivia

* The title appears on two pages rather than just one.
Chapter 211

**World Tour for Resources** (世 (せ) 界 (かい) 一 (いっ) 周 (しゅう) 素 (そ) 材 (ざい) 旅 (りょ) 行 (こう) , *Sekai Isshū Sozai Ryokō*) is the two hundred and eleventh chapter of the *Dr. Stone* manga.

## Summary

The chapter begins with everyone on the Perseus awaiting their next destination: Indonesia. There, they collect rubber from the trees and found Rubber City.

They discuss returning to Japan after 10 years of being away, ready to revive their friends, families, and laborers. Ryusui suggests bringing back souvenirs and Senku responds that that was always the plan. They begin farming rice to be taken back to Japan and fed to the workers to motivate them. In the meanwhile, Chrome and Suika's math lessons under Sai Nanami continue.

With some crafting, several rice paddies are made and the new Mobile Lab is affixed with harvesting and planting tools. The type of rice they farm is also high in amylopectin, allowing them to make onigiri.

Senku announces they will return to Japan to end their world tour.

## Characters in Order of Appearance

* Ukyo Saionji
* Senku Ishigami
* Gen Asagiri
* Chelsea Childe
* Kohaku
* Ryusui Nanami
* Francois
* Mirai Shishio *(Petrified)*
* Kokuyo *(Petrified)*
* Ruri *(Petrified)*
* Chrome
* Kaseki *(Pictured)*
* Suika *(Pictured)*
* Why-man *(Mentioned)*
* Yo Uei
* Sai Nanami *(Pictured)*
* Byakuya Ishigami *(Flashback)*

## Chapter Notes

* The Perseus arrives in Indonesia.
	+ Rubber city is founded.
	+ The crew have founded all of the cities.
* Rubber and rice are harvested.
* The Perseus leaves once more, headed to Japan.
Chapter 109

**Great Escape** (大 (だい) 脱 (だっ) 走 (そう) , *Dai Dassō*) is the one hundred and ninth chapter of the *Dr. Stone* manga.

## Summary

As Suika finds the mobile lab, Ginro attempts to escape the Perseus with Kinro's statue. However, after Suika provides a distraction, Ginro reflects on what Kinro might say and decides to help rescue the lab instead. While Suika's melon distracts the guards, she pilots the lab, disguised as an animal, into the ocean and back to Senku.

Now on land, the team is surrounded by Petrification Kingdom natives. In order to convince them that the lab is an animal, Senku creates skatole (poop smell). The lab rides away, the villagers are convinced it's just an animal.

## Characters in Order of Appearance

* Suika (Cover)
* Senku Ishigami
* Kohaku
* Amaryllis
* Gen Asagiri
* Soyuz
* Ginro
* Kinro *(Petrified)*
* Ibara
* Kirisame

## Chapter Notes

* **Poop smell acquired!!** Senku makes skatole using jasmine and amines from rotten seashells.

## Trivia

* The cover of this chapter is an homage to Arale from Toriyama's Dr. Slump.

## References

1. ↑ https://twitter.com/CDCubed/status/1140384163838644224