Rihito Isshiki

, also known as , is the central antagonist of Kamen Rider Zero-One: REAL×TIME. He is the founder of Thinknet who transforms into .
==History==
===Background===
Rihito Isshiki was once a kind scientist working for Nano MIRAI, one of the several companies funding Ark's development. He studied in AI-controlled nanomachines and its practice in human medicine. His fiancée Akane Tono was struck with an unidentified illness and Rihito used the technology to cure her condition. However, as a result of the Daybreak Town Accident, the nanomachines were compromised that resulted in Akane's death. Desperate to bring her back, Rihito digitized his mind using the nanomachines and his decomposing corpse is discovered days later. Now known as S, he forms Thinknet and preserved Akane's brain in the digital form. Many people flocked to Thinknet, forming an army for S can use to fulfill his plans.
===Kamen Rider Zero-One===
====Their Respective Futures====
After the war between humanity and Humagears was averted, Azu was approached S at night and grants him a Zero-One Driver and Zetsumerisekey. He transfigured the belt into the Eden Driver and transformed into Kamen Rider Eden. S proclaims his wish to destroy the current world to build a "paradise" on Earth.
===Kamen Rider Zero-One: REAL×TIME===
S sends a video message to Aruto Hiden announcing his intention to destroy the world in sixty minutes. As he commands the Kamen Rider Abaddons to attack cities worldwide, Kamen Rider Eden battles Kamen Rider Zero-Two and emerges victorious. Seizing the Zero-Two Progrisekey, he uses Zea's abilities to manifest the Hellrise Hopper Progrisekey. When Aruto returns just minutes later, Eden battles Zero-One MetalCluster Hopper and is blindsided as his nanomachine regeneration immobilized him. Eden manages to escape using the completed Hellrise Progrisekey, before destroying the building they are in and the majority of his followers.
At an abandoned chapel, S was followed by Aruto who tried to stop him from using Hellrise Progrisekey by transforming with it. Eden was overpowered by Zero-One Hellrising Hopper's animalistic rampage but was fortunately saved by Is as Zero-Two. He presisted to destroy the world to ensure the virtual paradise for him and his fiancée. However, after Aruto convices him that Akane doesn't want a world like this, S decides to end the destruction only to be stopped by Behru and his former followers, who decided to resume creating their digital paradise without him. The Kamen Riders help S reach Akane at the Thinknet servers as Behru takes his arsenal to become Kamen Rider Lucifer and leading the Abaddon Riders.
S arrives to the Thinknet servers and transports himself into the virtual chapel, only to believe Akane nowhere to be found. Before S could despair, Akane in bridal wear walks up the aisle and hugs him. S apologizes for not saving her and Akane says it's not his fault. Now donning white groom wear, Rihito Issiki slides a ring onto his Akane's finger and embraces her in their final moments and the Thinknet servers explode soon after.
==Video Games Appearances==
==Personality==
Before the Daybreak Town Accident, Rihito was once a kind man who deeply loved his fiancé, Akane, did the best he could to save her from her condition. After her death, Rihito was wracked with guilt and depression for inadvertently causing Akane's death. Since then, he was desperate to bring her back, even when it meant that he had to become a monster, which attracted Azu to recruit him as the next Ark.
As S, he is a charismatic and mysterious individual who is seen by his followers as an enlightened figure. He preaches of creating paradise, which he calls the "Paradise Guardia", inspiring loyalty in his followers. However, despite his utilitarian goals, S' love for Akane did not vanish and sought to create a virtual paradise for him and his wife to live in. S was willing to digitize people from the real world to populate his virtual realm without considering their own free will. However, while acting as a tremendous symbol, he was planning to abandon his followers in Thinknet in the ruined world, considering them a nuisance to his virtual paradise.
When Aruto discovered his true motives, S realized that his actions were out of selfish gain and should let Akane rest in peace. In the digital world, S was able to reunite with Akane and spent his final moments to embrace her, bringing back the good man that was previously Rihito Isshiki.
==Family==
Akane Tono (Wedding Dress).png|Akane TonoWife (deceased)
==Powers ==
*Regeneration: Since his new body is made of nanomachines, Eden can repair his body at an extremely fast rate whenever he takes damage.
*Nanomachine Control: Eden has absolute control over the nanomachines that make up his body, allowing him to fashion contructs like small blades and massive spikes to attack foes with. His nanomachines typically take the form of a blood red liquid but can also be hardened like a solid or scattered like a gas, as seen with the Abbadon Riders’ gas bombs. 
===Weaknesses===
* Cluster Cells: While Eden regenerates his body, Zero-One MetalCluster Hopper is able to send Cluster Cells to momentarily paralyze him, making him vulnerable to any attacks for a brief amount of time.
==Kamen Rider Eden==
Kamen Rider Eden
;Rider StatisticsKamen Rider Zero-One Chozenshu. Shogakukan, 2020. ISBN 978-4091051691
*Rider Height: 191.2 cm
*Rider Weight: 84.0 kg
;Ability Parameters
*Punching Power: 41.4 t
*Kicking Power: 91.8 t
*Maximum Jump Height: 51.5 m
*Maximum Running Speed: 100 m per 1.4 seconds
S transforms into Kamen Rider Eden by using the Eden Zetsumerisekey in the Eden Driver.
Stat-wise, Eden is actually weaker than Zero-One MetalCluster Hopper in all areas. However, due to S being an avatar made of nanomachines, Eden has the ability to regenerate from virtually any injury. This ability allows Eden to defeat Zero-Two despite the latter being much stronger. Eden is also able to form bladed constructs out of the nanomachines from his body or surrounding area to attack the opponent in battle. 
However, Eden's regeneration ability has two weaknesses, each of which is exploited by one of Zero-One's forms: MetalCluster Hopper can swarm Eden with Cluster Cells that constantly tear away at his body without pause, making him unable to fully recover. Hellrising Hopper is able to release all of the energy it has accumulated in a large explosion that damages all of Eden's body simultaneously, overwhelming his ability to reconstruct himself. This attack is the only thing that been shown to be able to force Eden out of transformation.
Eden wields the Thousand Jacker as his personal weapon.
Eden has the following finishers:
*Eden Driver finishers:
**: Eden lets a single drop of his nanomachines fall from his fingers. When it hits the floor, the surrounding area is flooded by the nanomachines, appearing like a pool of blood. Large spikes then emerge and follow the opponent's position. Once the enemy is trapped between spikes, they merge to form a dome that imprisons them. The dome enlarges before Eden closes his fist, causing it to quickly implode and leave behind a spray of the nanomachines in their liquid state.
*Thousand Jacker finishers:
**: Eden inserts a Progrisekey into the Thousand Jacker, pulls the hilt, and performs an attack utilizing the power of the inserted Progrise Key.
***Hellrise: Eden charges the Thousand Jacker with purple and red energy before pointing it upward, creating a pillar of light that extends miles into the sky and is surrounded by rings of red energy and spiraling red lightning. With the pillar of light anchored to the tip of the Thousand Jacker, Eden draws a circle in the air with the weapon, creating two rings of distortion above him. Finally, Eden stabs the Thousand Jacker into the ground, causing dark purple energy to travel back down the pillar of light. When the energy reaches the base of the pillar, it results in an explosion that sends out massive shockwaves of purple energy which destroy the surrounding area.
Appearances: Zero-One Episode 45, Kamen Rider Zero-One: REAL×TIME
==Equipment==
===Devices===
*Eden Driver - Transformation device
*Zetsumerisekeys - Transformation trinkets
*Progrise Holder - Carrying straps for Progrisekeys
===Weapons===
*Thousand Jacker
==Behind the Scenes==
===Portrayal===
S is portrayed by . As Kamen Rider Eden, his suit actor is , who previously served as the suit actor for Kamen Rider Thouser.
===Etymology===
This character's various names appear to have ties to the concept of the :
*Kamen Rider Eden's name comes from the .
*The katakana of might have derived from the Japanese pronunciation for .
*Also the alternative reading of his given name, S, is the first letter of Satan and Serpent, the antagonistic figures on the Garden of Eden.
===Concept Art===
==Notes==
*Eden's suit has the same base design as Kamen Rider Zero-One and Kamen Rider Thouser, except with thigh armor and legs recycled from Flying Falcon, as well as new arm and torso armor and a new helmet.
*Eden's suit is primarily a dark metallic blue with a black under suit, in addition to having white and dark red accent lines across his armor. However, the lines on his suit illuminate in a uniform magenta color instead, giving the illusion of the suit appearing more purple than black and blue.
*According to producer Takahito Omori, Kamen Rider Eden's actual design motif is a human to make it a contrast with most of the series' Riders so far. He also added that the red lines on its body were meant to emulate blood vessels. Despite being the initial antagonist, Eden was purposely designed to appear heroic instead of monstrous.https://www.cinematoday.jp/news/N0120771
**In addition, Eden was originally meant to resemble an extinct animal, but this concept was dropped in favor of the aforementioned human design, so as to emulate Eden's desire to eradicate mankind.
*According to producer Takahito Omori, most if not all of S's speeches are emulated directly from the Bible's Old Testament.https://www.cinematoday.jp/news/N0120806
*Guest star Hideaki Ito had been a fan of Kamen Rider as a child and was at the age where even he would sit down to watch the series with his own son. As such, Ito asked Toei to allow him to appear in the franchise and he agreed to portray S. Though COVID-19 had occurred shortly after he was cast into the role, Ito was able to coordinate his schedule and continue playing his character despite the film's original summer release delayed to its finalized winter premiere.https://twitter.com/toei_zero_one/status/1346373094026317826Figure King 276 2021 , pp. 58–59, Interview / Composition / Sentence Kyotaro Omae "Zero One Development Plan / Browsing CODE: 003 Toward a dream, Toward the FUTURE Maliciousness is born in Soko"
==Appearances==
* Kamen Rider Zero-One
**Episode 45/Finale: Their Respective Futures
**Kamen Rider Zero-One: REAL×TIME
**Zero-One Others: Kamen Rider MetsubouJinrai 
==See also==
*Kamen Rider Lucifer
==Navigation==
Category:Zero-One Characters
Category:Reiwa Era Riders
Category:Zero-One Riders
Category:Movie Riders
Category:Antivillains
Category:Thinknet
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Category:Allies
Category:Deceased
Category:Non-human Riders
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