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Joichiro Kaji in a fur lined trapper hat and green anorak, leaning against a graffiti covered wall in a narrow alley
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Joichiro Kaji

Character

Joichiro Kaji is a shy but gifted young assassin in Sakamoto Days who joins the JCC entrance exam as a special recommendation. Quiet and prone to overthinking, he hides an almost impossible sense of hearing that turns him into one of the toughest applicants in the room.

Eyes: Black
Debut: Chapter 62
Gender: Male
Height: 182 cm
Status: Alive
Weight: 86 kg
Jp Name: 加耳丈一郎
Species: Human
En Voice: Daman Mills
Jp Voice: Tomoaki Maeno
Birth Date: December 6
Occupation: Assassin
Affiliation: JCC
Anime Debut: Episode 19
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Appearance

Kaji is a lanky youth whose dark, deep-set eyes sit beneath a navy ushanka trimmed with grey feathers, the cap pulled down over his hair. His wardrobe runs cold in tone: a teal jacket fastened with black buckles at the collar, shoulders, and cuffs, paired with pale aquamarine trousers cut with pockets and dark navy footwear.

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Personality

Painfully bashful, Kaji second-guesses nearly every move before he makes it, which leaves him quiet for long stretches. That timidity hides real resolve, though. When it counts he proves brave and coordinates smoothly with teammates, laying out plans and carrying them through.

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Abilities

Brought in as a special recommendation during the third stage of the JCC entrance exam, Kaji ranks among the toughest applicants despite his reserved manner. His signature gift is an almost impossible sense of hearing. Teaming with the clairvoyant Shin Asakura against a Gaku-controlled Shinaya, he picked out Shinaya's heartbeat from a distance, caught the faint noise of the rig Gaku used for remote control, and even registered that Shinaya was fast asleep. By tracking the gap between Gaku's commands and Shinaya's motions, he measured a half-second lag, and he used distant echoes to pin down Gaku's position and reach. Given time and focus, Kaji can also mimic an opponent once he has learned their sounds.

His physical output matches the sensory edge. He is quick enough to snatch up both Toramaru and Mafuyu and bolt clear of Shinaya, nimble enough to slip past Shinaya's blistering strikes, and once he has a foe's rhythm he can outrun and hit them. His blows carry enough force to launch Shinaya backward, and his durability is startling: a hit that gutted his lower right abdomen, from a punch strong enough to fell several JCC examiners, failed to finish him, and he later recovered fully. He came out of the ordeal accepted into the JCC. In the English release his anxiety surfaces as a slight speech quirk.

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Frequently Asked Questions

Who is Kaji in Sakamoto Days?

Joichiro Kaji is a shy but gifted young assassin who joins the JCC entrance exam as a special recommendation, hiding an almost impossible sense of hearing that makes him one of the toughest applicants in the room.

What happened to Kaji in Sakamoto Days?

During the JCC entrance exam, Kaji teams with Shin Asakura against a Gaku-controlled Shinaya, survives a serious hit to his lower abdomen, recovers fully, and is ultimately accepted into the JCC.

What is Joichiro Kaji's special ability?

Kaji's signature gift is an almost impossible sense of hearing, letting him pick out heartbeats from a distance, detect faint remote-control devices, and measure the lag between a controller's commands and a target's movements.

What does Joichiro Kaji look like?

Kaji is a lanky youth with dark, deep-set eyes beneath a navy ushanka trimmed with grey feathers, wearing a teal jacket with black buckles and pale aquamarine trousers.

What is Joichiro Kaji's personality like?

Kaji is painfully bashful and second-guesses nearly every move, but that timidity hides real resolve, and he proves brave and coordinates smoothly with teammates when it counts.

Sources & Information

Looking for more on Joichiro Kaji? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.

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This content is original writing by Daddy Jim Headquarters based on the Dragon Ball anime series, manga, and official materials. Episode and chapter references are cited where applicable.

Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:

  • Movie pages: theatrical posters and key visuals, credited to Toei Animation and Shueisha.
  • Game pages: official box art, credited to Bandai Namco, Atari, and other publishers.
  • Manga chapter pages: Jump Comics volume covers, credited to Shueisha and Akira Toriyama.

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