Asaba Kotone

Biodata

Power Progression

Kotone advances through Affinity Album rewards rather than named cultivation realms. The rewards are variously called Constitution and Physique in the provided chapters; no complete numerical total is stated 1 9 49.

Background / History

Transmigration and meeting Denji

Kotone was a high school student reading the Chainsaw Man manga in bed when his entire body was transported into its world. He received supernatural abilities and a fabricated Japanese identity, but no chakra. Meeting twelve-year-old Denji established that he had arrived in 1993, four years before the original storyline 1 2 23.

His first encounter was with the wounded Pochita, whom he offered his blood to heal. By befriending Pochita first, Kotone prevented the original bond between Pochita and Denji from forming. He subsequently approached Denji at his parents' grave using an invented story about a family acquaintance, both to obtain affinity rewards and to compensate Denji for that disruption 1 2.

Freeing Denji from debt

Kotone began hunting devils with Pochita, rescued a girl from the Field Mouse Devil, and became a guild-certified private Devil Hunter. Selling the corpse brought him his first payment of 600,000 yen 3 5.

To remove Denji's creditors, he used Matsuno Yoshiko's gang connections to reach Mr. Hamano and tempt him with the Zombie Devil's location. Kotone then killed the Zombie Devil and its zombies, leaving the gang and police unaware that the devil was already dead 7 8 9 11.

He rented a comfortable apartment for Denji, furnished it, and bought clothes, food, and games. He also offered to send Denji to middle school, intending to establish a life that would not require Denji to accompany him into increasingly dangerous situations 9 10.

Building a reputation in Chiba

Kobeni's catalog entry prompted Kotone to travel to Chiba and seek admission to her school. He planned to build a local hunting reputation first, using it to obtain the connections needed for enrollment 6 11.

School life and the Jealousy Devil

Kotone earned a perfect score on the principal's assessment in just over half an hour. He enrolled as a transfer student in Second-Year Class 1 specifically because Kobeni was there, offering to handle any devils that appeared on campus 23.

He rejected Gotō Iwen's invitation to the Devil Research Club and instead founded a Reading Club with Kobeni and Rika Matsumoto. He later admitted that he had created the club for Kobeni 29 44.

When Gotō lost control under the Jealousy Devil's influence, Kotone repeatedly removed the devilish growths from his back. He protected Gotō from the attack triggered by breaking his contract, killed the Jealousy Devil in the clubroom basement, and left Gotō's disciplinary consequences to the school and police. He subsequently handed the corpse to Aki and Himeno for Public Safety examination 34 35 37.

The amusement park and Kobeni's family

At the amusement park, Kotone accepted Kobeni's offer of friendship. When the Maze Devil transformed an attraction into a lethal trap, he cut an escape route for nearby visitors, phased through the maze, and caught its fleeing heart by teleportation. He recovered a Gun Devil flesh fragment and later sold the heart for 500,000 yen 39 41 42.

Kobeni confessed her feelings during Reading Club activities, and Kotone reciprocated. After learning that her parents had pressured her to consider sex work, he visited her home and witnessed her father trying to make her conceal their mistreatment. He helped her leave, making clear that any future financial support for her parents would be her own decision 44 45 46 47.

Kobeni moved in with him less than a day after they began dating. Kotone bought her three new outfits and stayed in Chiba for several more days before moving forward with Public Safety 48 49.

Joining Tokyo Public Safety

With Kobeni's family problems addressed and Aki's album entry available, Kotone decided to join Tokyo Public Safety. He hoped Aki and Himeno could live normal lives together and resolved not to let Makima control Aki when she arrived in the human world 49.

He was assigned to Special Division 2 alongside Aki and Himeno. Because no separate partner was available, he would work with them; the division's boss specifically requested to meet him. Kotone denied that revenge against the Gun Devil was his reason for joining 50.

Appearance

Kotone has delicate, youthful features and distinctive deep-red eyes 1.

• Eyes: Each iris bears three sickle-shaped tomoe; their unusual appearance initially makes some hunters suspect he is a fiend 1 3.
• Build: Looks slim while dressed but is visibly muscular and physically strong 31.
• Usual early clothing: A pure white trench coat 1 2.
• School clothing: A Western-style boys' uniform with a tie 26.

Personality

Kotone combines calculated relationship-building with genuine concern for others. Affinity rewards influence his decisions, but he explicitly wants to compensate Denji for losing his original connection with Pochita and help Kobeni escape her family troubles. His affection for Kobeni predates his arrival in her world 2 10 16 45.

He is cautious, composed, and capable of convincing deception. He feigns interest in Matsuno Yoshiko to exploit her connections, conceals his actual reasons for attending school, and improvises a false explanation about seeing alcohol around Himeno without visibly betraying the lie 4 5 23 50.

His restraint is especially apparent with vulnerable people. He avoids criticizing Kobeni's poor lunch to spare her feelings and chooses to save Gotō after recognizing that the devil has overwhelmed his reason. Despite cultivating a useful public reputation, he dislikes excessive attention and does not use school athletics to show off 26 28 31 34.

Abilities & Skills

Dual Kamui

Kotone possesses Kamui in both Mangekyō Sharingan eyes, enabling spatial distortion and access to the Kamui Dimension. Without chakra, he pays for its use through bodily resources and ocular power 1.

• Close-range transfer: His right eye draws objects or himself into the dimension, including large devil corpses 3 11.
• Remote spatial attack: His left eye tears away a focused target and transfers it into the dimension; he kills the Steel Plate Devil by removing its neck 17 18.
• Defense bypass: Remote Kamui operates on space rather than conventional physical damage. A target must escape before the transfer completes to avoid the attack 18.
• Dual-eye speed: Possessing both eyes lets him open spatial portals faster than a single-eye user 18.
• Early limitation: Repeated use could completely exhaust his body and kill him. Rest restores his body and ocular power 3 6.
• Later endurance: By Aki's entry activation, routine Kamui use causes practically no strain 49.

Intangibility

Kotone can let attacks and solid obstacles pass through him, and extend that state to things or people he touches 7 8 34.

• Walks through walls, locked doors, floors, and the Maze Devil's obstacles 7 35 41.
• Carries Pochita through a wall by applying Intangibility to him through contact 7.
• Protects Gotō from the Jealousy Devil's contract-breaking punishment by touching his shoulder 34.
• Cannot attack while intangible: He must deactivate the state to strike. Keeping Pochita solid while his hands are intangible would make the weapon pass through his grip 8.
• Alternates between phasing through incoming attacks and becoming tangible to counterattack 20.

Spatial Teleportation

By opening connected entrances with both eyes, Kotone can transfer directly between locations without using the Kamui Dimension as an intermediate stop 11.

• Within sight: Can appear anywhere in his field of vision, allowing sudden attacks from above or directly beside a target 11 20.
• Established coordinates: Can travel to previously marked places, including his rented home, the Guild Hall, and the club building 13 19 35.
• Rescue and pursuit: Reaches Kobeni before the Bookshelf Devil can consume her and catches the fleeing Maze Devil heart 14 41.
• Distance cost: Long-distance transfers consume substantial energy. He initially takes ordinary transportation to conserve strength; extremely long-distance travel remains costly later 13 49.

Mangekyō Sharingan Perception and Learning

His eyes provide far-superhuman perception and learning ability independently of active Kamui use 3 13.

• Sees the movement of Gotō's air-bullet attack and dodges with a small head movement 33.
• Detects a faint glow in the Jealousy Devil's pitch-black basement 35.
• Rapidly masters entrance-exam material, memorizes his future classmates' names, and easily retains classroom lessons 13 23 24 29.
• His claim that he can see alcohol around Himeno is an improvised lie, not a demonstrated ocular ability 50.

Affinity Album

The Affinity Album—also called the catalog or compendium—provides character entries, information, and rewards for increasing affection 1 6 49.

• Initially permits only the Chainsaw Devil and Denji entries; an unavailable entry cannot be activated merely by meeting its character 1.
• An initial entry activation grants Constitution +1, with further constitution rewards at documented 10% affection milestones 1 2 45 49.
• Reaching 50% affection opens additional character pages 1 39.
• Entries may provide personal information, such as Kobeni's age, school, and residence 6.
• A newly activated entry can recognize existing affection: Aki begins at 40% and immediately grants the corresponding milestone rewards 49.
• Human maximum-affection reward: Five additional constitution points at 100% 49.
• Devil maximum-affection reward: The devil's abilities. Maximizing Pochita's affection would let Kotone become Chainsaw Man, but he has not achieved this in the supplied chapters 49.

Enhanced Physique and Chainsaw Combat

Constitution rewards improve Kotone's physical performance and recovery beyond ordinary human limits 5 9.

• Efficiently cuts down zombies and weaker devils using Pochita as a chainsaw 3 9.
• Combines teleportation, Intangibility, and close-range chainsaw strikes to attack from unpredictable positions 8 11 20.
• Repeatedly dismembers the regenerating Carp Devil before it can recover 20.
• Outruns classmates even while deliberately holding back 31 32.
• Still aims to reach Kishibe and Quanxi's level in taijutsu rather than measuring himself against ordinary people 49.

Susanoo

Kotone can use Susanoo but keeps it unrevealed because of its energy demands and value as a reserve ability 20 38.

• Has access to the initial, first, second, third, fourth, and perfect forms 49.
• Judges it unnecessary against the Carp Devil and doubts his body could sustain it for long at that point 20.
• Ultimately wants enough constitution to use Perfect Susanoo freely 49.

Genjutsu

Genjutsu is another unrevealed reserve ability. No use or specific effect is demonstrated in the supplied chapters 38.

Languages

Kotone received proficiency in every country's language upon transmigration 1.

Equipment / Weapons / Items

• Pochita as a chainsaw weapon — Holds the handle on Pochita's back and pulls his tail to start and extend the head-mounted chainsaw. Pochita is a willing companion rather than an inanimate weapon 3.
• Guild identification — Certifies him as a private Devil Hunter and helps him reassure people frightened by Pochita 5 16.
• Kamui Dimension storage — Holds devil corpses, removed devilish growths, and the Gun Devil flesh fragment. It also contains a sofa, snacks, and games for Pochita 3 35 41 42.
• Gun Devil flesh fragment — Recovered from the Maze Devil's heart and retained in the Kamui Dimension 41 42.
• School supplies and study materials — Entrance-exam books, past papers, textbooks, and a uniform obtained while preparing to enroll 13 18 23.

Relationships

• Pochita — His companion and willing combat partner. Kotone initially heals him with blood; their later contract concerns Pochita staying with him, not granting devil powers. His affection reaches 60% 1 3 38 42.
• Denji — His ward and younger-brother figure. Kotone supplies a home and education opportunities while preventing the debt-related tragedy he knows from the manga; he continues checking on Denji after moving to Chiba 2 9 10 42.
• Kobeni Higashiyama — Schoolmate, Reading Club co-founder, and girlfriend. Kotone supports her against her parents and takes her into his home; her affection reaches 80% 29 45 47 48 49.
• Aki Hayakawa — Former civilian hunting partner and later Special Division 2 colleague. Kotone checks whether Aki has used his lifespan-consuming Curse Devil sword and intends to protect him from Makima 13 49 50.
• Himeno — Public Safety contact and later colleague. She collects the Jealousy Devil corpse, encourages his recruitment, and accompanies him to headquarters 37 50.
• Rika Matsumoto — Reading Club co-founder who actively encourages Kobeni's relationship with Kotone and helps prompt her confession 29 38 44 45.
• Gotō Iwen — Jealous classmate whom Kotone saves from devil influence and contract punishment. Kotone separates rescuing him from deciding his legal or school punishment 33 34 35.
• Matsuno Yoshiko — A gang-connected woman whose interest Kotone feigns to gain black-market access and reach Mr. Hamano 4 5 7.
• Mr. Hamano — Denji's creditor and the target of Kotone's plan to lure the gang into seeking the Zombie Devil's power 5 7 9.
• Nagi Higashiyama — Alerts Kotone that Kobeni has shut herself in her room after being yelled at and gives him the family address 46.
• Shinya and Gei Higashiyama — Kobeni's parents. Kotone confronts their treatment of her and refuses to let them dictate whether she continues supporting them financially 46 47.

Notable Quotes

“I'll take good care of you from now on, and you won't die tomorrow.” 2

“I'm a Devil Hunter. Of course I have to take care of this devil first.” 41

“You're my girlfriend now, after all. I should help shoulder some of your worries.” 45