Legendary assassin turned 13-year-old is hilarious premise—39-year-old hitman Juzo trapped in middle school body creates age gap comedy. Kuroko's Basketball creator doing action-comedy is exciting; Tadatoshi Fujimaki bringing sports manga expertise to assassin genre promises quality. Shoya Chiba voicing one brother is perfect casting; his experience with calculating characters like Ayanokoji suits an assassin. Middle school infiltration creates comedy potential—deadly professional navigating youthful chaos and colorful classmates promises entertainment.

The strongest assassins are a pair of Rindou's in the upcoming anime adaptation of Tadatoshi Fujimaki's action-comedy manga series Kill Blue. The two brothers were cast today for the series, revealing who will voice them and their character visuals.

New Cast Members (Rindou Brothers)

Kazuma Rindou - Shoya Chiba (Known for: Kiyotaka Ayanokoji in Classroom of the Elite)

Eiji Rindou - Yoshiki Nakajima (Known for: Shun Aoi in Aoashi)

Production Details

Animation Studio: CUE

About the Manga

Tadatoshi Fujimaki (Kuroko's Basketball) serialized the Kill Blue manga in Shonen Jump from April 2023 to September 2025, releasing a total of 13 collected volumes. VIZ Media releases an English-language version of the series.

The Story

The anime's official website describes the story:

Juzo Ogami is a legendary hitman who has never failed an assignment, no matter how impossible. One day, after wiping out a powerful organization, he is stung by a mysterious wasp and collapses. When he wakes up, the fearsome 39-year-old assassin has been transformed into a 13-year-old boy!

Before he can even process what happened, his boss delivers a new order: In that body, infiltrate a middle school.

What awaits him is an unexpected school life filled with colorful classmates, youthful chaos, and looming danger. Can Juzo ever return to his original form? Or will the assassins closing in on him end his second life before it even begins!?

Are you excited for Kill Blue? What do you think of the premise? Do you read the manga? Which Fujimaki work is your favorite? Share your thoughts in the comments below!