Kaiyochi Hatoki

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Affiliated with the Demon Slayer Corps, **Kaiyochi Hatoki** (鳩木海洋地 *Hatoki Kaiyochi*) holds the rank of Kinoe (きのえ *Kinoe*) and has eliminated a total of 41 demons. He aspires to advance in rank and become a Hashira (柱 *Hashira*).

## Affiliation

### Occupation

Slaying Demons
 Reading

## Personal Status

### Relative(s)

Yotsuyahi (ancestor)
 Kazoku Yurikinyo (ancestor)
 Unnamed parents
 Unnamed younger brother
 Unnamed reincarnation

## History

Kaiyochi's background remains largely unknown, except for the fact that his entire family died from an enigmatic ailment, leaving him as the lone survivor. While he was in a deep state of grief and desired to perish alongside his loved ones, Kagaya Ubuyashiki was able to dissuade him.

Following those incidents, Kaiyochi underwent rigorous training and became a skilled Demon Slayer, attaining the rank of Kinoe. He takes his responsibilities as a Demon Slayer seriously and understands that numerous demons were once humans who were unwillingly transformed into demons by Muzan Kibutsuji and his demon cohorts.

It was rumored that his ancestors were Demon Slayers who used the mysterious **Nova Breathing** style, which was later confirmed to be true.

## Appearance

Kaiyochi is a young man of average height with dark brown eyes and medium indigo hair. He sports a Demon Slayer uniform that includes loose hakama pants and a dark blue haori, which ends in a light red shade at the bottom. His Nichirin Sword and its sheath are both indigo and dark red, secured under his belt. He completes his ensemble with black tabi socks and blue zōri over them. During his encounter with Yotsuyahi, the Upper Rank Three, Kaiyochi awakened his Demon Slayer Mark. The mark, which he acquired despite Yotsuyahi's escape, features a jet-black sun with yellow and purple star-like dots and and a supernova-like border, all located on the left side of his forehead.

## Personality

Kaiyochi is fully devoted to his duty as a Demon Slayer. His unwavering dedication to exterminating the demons is admirable, but he also possesses a glimmer of compassion towards the creatures he combats. Despite this, he handles his responsibilities with an easeful and free-spirited approach, avoiding becoming too preoccupied with weaker adversaries. Yet, when he confronts formidable demons, particularly the infamous Twelve Kizuki, he transforms into a more focused and unwavering individual. Despite witnessing wholesome and unbroken families, a rarity for him, he suppresses any feelings of jealousy, recalling his own losses. Furthermore, he indulges in an assortment of literary genres, finding solace in the countless worlds conjured up by the written word.

## Abilities

**Overall Abilities:** Kaiyochi is an incredibly formidable Demon Slayer, having attained the rank of Kinoe and slain 41 demons, almost reaching the level of Hashira. During an encounter with three demons, he displayed his exceptional skill by quickly beheading all of them with only two strikes of his Nichirin Sword. To add to this, when a large tree branch was hurled his way, he effortlessly cut through it. He skillfully evaded a barrage of punches from another demon who tried to strike him. During his battle with Yotsuyahi, the Upper Rank Three, he astounded the Twelve Kizuki demon by swiftly chopping off his limbs.

**Demon Slayer Mark:** While Kaiyochi battled Yotsuyahi, the former unlocked his Demon Slayer Mark, which resembles a jet-black sun with yellow and purple star-like dots and and a supernova-like border, all of which are located on the left side of his forehead.

* **Bright Red Nichirin Sword:** When Kaiyochi attacks Yotsuyahi using the **Sixth Form: Nebula, Raging Punishment** technique at an incredibly fast pace, it results in increased friction. As a result, his Nichirin Sword turns a bright red, a cause of this also being his awakened Demon Slayer Mark.
* **Transparent World****:** During his last battle with Yotsuyahi, Kaiyochi caught a fleeting glimpse of the Transparent World as he was forcefully propelled upside down alongside Tanjiro.

**Immense Speed & Reflexes:** Kaiyochi's speed and reflexes border on superhuman, which allowed him to easily outmaneuver a group of demons, leaving them dizzy and disoriented. Similarly, during his battle with Yotsuyahi, he impressively dodged nearly all of the Upper Rank Three's attacks, which ranged from rapid barrages of star bullets to meteor showers and powerful suctioning black holes.

**Immense Stamina & Endurance:** Although Kaiyochi suffered severe injuries to his legs and arms during his initial encounter with Yotsuyahi, he persisted in fighting the demon head-to-head. Despite profuse bleeding from being struck by six of Yotsuyahi's star bullets, he remained determined to battle the Upper Rank, greatly surprising his foe.

**Immense Strength:** Kaiyochi's physical strength is nothing short of superhuman, as evidenced by his remarkable ability to break through solid objects. One particular instance that highlights this was when he smashed through a wall simply by elbowing it, further reinforcing his impressive power and resilience. Moreover, following a vicious attack by a demon that hurled him into the air, Kaiyochi managed to think on his feet and used the momentum of the fall to his advantage. Snatching hold of a nearby tree, he summoned every ounce of his strength and yanked it out of the ground, cushioning the impact of his landing.

**Indomitable Will:** Kaiyochi possesses a strong willpower that defines him. He is a warrior who remains undefeated in difficult situations. His unwavering spirit sets him apart from others, giving him the bravery and endurance to face any challenge. One remarkable instance of Kaiyochi's willpower was when he sustained severe injuries from a formidable demon but chose not to give up. His determination and resilience amazed both his opponent and those watching. Yotsuyahi found Kaiyochi's ability to persevere and succeed in near-impossible circumstances to be exceptional.

## Fighting Style

### Breathing Style

**Nova Breathing (新 (しん) 星 (せい) の呼 (こ) 吸 (きゅう) , *Shinsei no Kokyū*?)**: The Nova Breathing technique is a rare and exclusive breathing style that has only been taught within the confines of Kaiyochi's family. There are no known records or sources outside of his lineage that can teach this technique. Unfortunately, his family members were stricken by an unknown illness that led to their untimely death. Kaiyochi somehow survived the illness and inherited the knowledge of the Nova Breathing technique. He is currently the only user of it in the world. This advanced technique is known for its unique and challenging style that emphasizes a strategic combination of hand movements and breathing techniques. It requires immense focus, stamina, and precision to successfully execute. The techniques listed in the Nova Breathing style involve the user being able to disorient or confuse the opponent to create openings for powerful attacks. The user also has an insurmountable amount of strength to deliver devastating blows, slashes, and jabs to the designated target. Despite the secrecy surrounding this technique, there are a few individuals who are aware of its existence. Many consider it to be one of the most challenging breathing styles to master due to its complexities and advanced techniques. The sheer power and effectiveness of the hits delivered by the Nova Breathing style are unmatched and feared by those who know of it.

* **First Form: Sunburst Strike (壱 (いち) ノ型 (かた)  太 (たい) 陽 (よう) 爆 (ばく) 破 (は) , *Ichi no Kata: Taiyō Bakuha*?)** - The user performs a quick dash behind the target, causing them to turn around and expose their back. The user engages in a stealthy move and slashes the target swiftly, catching them off-guard and unseen.
* **Second Form: Helios Bolt (弍 (に) ノ型 (かた)  ヘリオスの雷 (かみなり) , *Ni no Kata: Heriosu no Kaminari*?)** - The user dashes forth at the target at blinding speeds and delivers a multitude of slashes onto the target, possibly amputating them if not killing them.
	+ **Second Form, Improved: Berserk Helios Bolt (弍 (に) ノ型 (かた)  · 改 (かい)  ベルセルクヘリオスの雷 (かみなり) , *Ni no Kata, Kai: Beruseruku Heriosu no Kaminari*?)** - The user employs an elevated and more ferocious version of **Helios Bolt**, moving in a frenzied whirl around their opponent before unleashing a barrage of rapid slashes and jabs that are almost certain to prove fatal.
* **Third Form: Explosive Star Demise (参 (さん) ノ型 (かた)  爆 (ばく) 発 (はつ) 物 (ぶつ) 恒 (こう) 星 (せい) 終 (しゅ) 焉 (うえん) , *San no Kata: Bakuhatsubutsu Kōsei Shūen*?)** - With a powerful kick, the user launches their target into the air. Then, as the target descends, the user swiftly and strongly leaps upwards and blasts through them using their Nichirin Sword.
* **Fourth Form: Starry Shadows (肆 (し) ノ型 (かた)  星 (ほし) 蔭 (かげ) , *Shi no Kata: Hoshi Kage*?)** - With nimble and agile movements, the user effortlessly evades any attack aimed in their direction and dashes around the target, leaving behind lifelike afterimages designed to bewilder their opponent. These slick maneuvers create several opportunities for striking vulnerabilities.
* **Fifth Form: Sunspot Blaze, Infernal (伍 (ご) ノ型 (かた)  黒 (こく) 点 (てん) 炎 (ほのお)  ・苦 (く) 患 (げん) , *Go no Kata: Kokanee Honō - Kugen*?)** - The user assumes a position before swiftly charging towards the enemy with surreal velocity, delivering three swift but severe slashes.
	+ **Fifth Form, Improved: Sunspot Blaze, Radiant Purgatory (伍 (ご) ノ型 (かた)  · 改 (かい)  黒 (こく) 点 (てん) 炎 (ほのお) ・黄 (よ) 泉 (み) , *Go no Kata, Kai: Kokuten Honō - Yomi*?)** - A drastically stronger form of **Sunspot Blaze, Infernal**, the user dashes frenziedly towards the target with ease, evading any incoming attacks and ultimately striking the enemy ten times.
* **Sixth Form: Nebula, Raging Punishment (陸 (ろく) ノ型 (かた)  星 (せい) 雲 (うん)  · 激 (げき) 怒 (ど) 刑 (けい) , *Roku no Kata: Seiun - Gekidokei*?)** - With their sword, the user whirls around and persistently cuts at the target. Then, the user targets the enemy's midsection, aiming to bisect them.
* **Seventh Form: Holy Solar Halo (漆 (しち) ノ型 (かた)  神 (かむ) 幻 (げん) 日 (じつ) , *Shichi no Kata: Kamugenjitsu*?)** - While being airborne, the user executes a somersault onto the target and delivers a sole circular slash.
* **Eight Form: The Radiant Sun After the Dark Eclipse (捌 (はち) ノ型 (かた)  闇 (くら) く日 (にっ) 蝕 (しょく) の後 (のち) 耀 (かがや) く太 (たい) 陽 (よう) , *Hachi no Kata: Kuraku Nisshoku no Nochi Kagayaku Taiyō*?)** - The user springs towards the target, anticipating an attack from them. The user then rapidly dodges the incoming strike and proceeds to unleash two circular slashes onto the target.
* **Ninth Form: Ninefold Solar Gale Slashes (玖 (く) ノ型 (かた)  ノ型 (かた)  九 (ここの) 重 (え) 太 (たい) 陽 (よう) 風 (ふう) 斬 (ざん) 撃 (げき) , *Ku no Kata: Kokonoe Taiyōfū Zangeki*?)** - The user delivers three slashes to the enemy's torso, followed by an additional three to their legs, and concluding with a final three strikes to the arms and head of the target.
* **Tenth Form: Corona Burst, Stardeath (拾 (じゅう) ノ型 (かた)  光 (こう) 環 (かん) 爆 (ばく) 発 (はつ)  • 星 (ほし) 死 (し) , *Jū no Kata: Kōkan Bakuhatsu - Hoshishi*?)** - Ascending to a high position, the user then plunges towards the target, thrusting towards their head.
* **Eleventh Form: Crazed Supernova Wrath (拾 (じゅう) 壱 (いち) ノ型 (かた)  狂 (きょう) 気 (き) 超 (ちょう) 新 (しん) 星 (せい) の怒 (ど) 気 (き) , *Jū Ichi no Kata: Kyōki Chōshinsei no Doki*?)** - The user expeditiously cuts through the enemy's legs, detaching them, and subsequently swings their sword upwards with the intention of bisecting the target.
* **Twelfth Form: Frenzied Supernova Rage, Desperate Destruction (拾 (じゅう) 弍 (に) ノ型 (かた)  狂 (きょう) 騒 (そう) 超 (ちょう) 新 (しん) 星 (せい) の激 (げっ) 高 (こう)  • 倒 (とう) るか反 (そ) るか, *Jū Ni no Kata: Kyōsō Chōshinsei no Gekikō - Tōrukasoruka*?)** - This is the fiercest and most critical technique of all Nova Breathing. The user executes at minimum five diverse forms on the target and then ferociously strikes all parts of the enemy's body, delivering a total of 20 slashes.

## Trivia

* Based on his birthday of February 13th, Kaiyochi is confirmed to be an Aquarius.
* Kaiyochi's given name contains the kanji for "**ocean**/**maritime**" (海洋 *kaiyō*) and "**blood**" (血 *chi*).
* Kaiyochi's surname. **Hatoki**, contains the kanji for "**pigeon**" (鳩 *hato*) and "**wood**" (木 *ki*).
* Kaiyochi hated spinach since he was a child, and tries to avoid eating it if he is forced to.
* Kaiyochi's favorite food is omurice.
* Kaiyochi has a pet dog he named **Jikochu**, which often attacks his Kasugai Crow.
* Jikochu's name literally means "**selfish**" in Japanese, evident to his selfish nature.
* Kaiyochi, although liking all book genres, he favors comedy-genre books.

## Quotes

* (Kaiyochi In regards to his duties as a Demon Slayer) *"As a Demon Slayer, my responsibility is to track down and eliminate demons. It's worth acknowledging that demons were once human beings, even though they now exhibit a ruthless and heartless nature, feasting upon innocent individuals. However, any demon that poses a threat to humanity through harm, death, or consumption will suffer the consequences of my unwavering determination. This duty of mine is a solemn oath I've taken."*
* (Kaiyochi to Tanjiro Kamado about his goal to become a Hashira) *"I have already killed 41 demons, and my present rank is Kinoe. If I manage to slay nine more demons or even a Twelve Kizuki, I will earn the title of Nova Hashira. Does 'Nova Hashira' sound good to you? I think it sounds good. But I want to know what you think."*
* (Kaiyochi to Yotsuyahi) *"Hey, could you explain why you transformed into a demon? Was it intentional or beyond your control? Maybe intrusive thoughts played a role? Regardless, I'm obliged to eliminate you now."*
* (Kaiyochi as his life fades) *"I guess dying isn't so bad. I might see my family again... or be reincarnated into a peaceful life. Maybe that's just a pipe dream... who knows? I made some good friends in this life. I hope they live long... lives."*

## Equipment

**Standard Nichirin Sword:** Kaiyochi wields a standard Nichirin Sword with a red base ending in an indigo tip. Etched into the blade is a unique inscription, written in Japanese kanji: (夜明けの始まり *Yoake no Hajimari*) translating to **Dawn's Beginning**.

## Author's Note

Big thanks to SakuraAnrō27 for the translation of the Nova Breathing forms, they made this possible.