The Kill Blue TV anime has received a new trailer and key visual ahead of its April 11 (JST) broadcast debut.
The anime is based on the manga by Tadatoshi Fujimaki and has the following synopsis:
A legendary assassin at 39. Starting over… as a middle schooler.
Jūzō Ōgami 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 Jūzō ever return to his original form? Or will the assassins closing in on him end his second life before it even begins!?
© Tadatoshi Fujimaki / Shueisha, KILL BLUE Production Committee
The manga started serialization in Shueisha’s Weekly Shonen Jump in 2023 and ended in August 2025, on the date of the anime’s announcement. The 13th volume was released in December 2025.
Staff
• Animation supervisor and series composer (previously credited as director): Hiro Kaburagi (director of Great Pretender, Kimi ni Todoke Season 1 and 2)
• Animation director (written in katakana): Yasunori Ide (Please Teacher! and Please Twins! director)
• Character designer: Miho Daidoji
• Animation production: CUE
Cast
• Yuko Sanpei as Jūzo Ogami
• Fuka Izumi as Noren Mitsuoka
• Shuichiro Umeda as Kotatsu Nekota
• Daisuke Sakuma as Shin Kohazame
• Takeo Otsuka as Tenma Tendo
• Shoya Chiba as Kazuma Rindo
• Yoshiki Nakajima as Eiji Rindo
• Atsumi Tanezaki as Chisato Shiraishi
• Yumi Uchiyama as Eri Wanibuchi
• Shunsuke Takeuchi as Jūzo Ōgami (Adult)
Source: Press release
