Completed Anime

“Legendary hitman Juuzou, 39, becomes 13-year-old boy after wasp sting; must infiltrate middle school while evading assassins.”

Kill Blue

キルアオ

7.4

2,600 rank · 64,824 viewers · 141 favorites

Action Comedy School Shounen

12 episodes · 23 min per ep min · Spring 2026 · Cue · PG-13 - Teens 13 or older

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Episodes · 12 11/12 aired

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Based on your preference for character-driven stories with layered emotional arcs, this title's exploration of identity and belonging would deeply resonate. The pacing mirrors series you've rated highly, and its thematic depth aligns with your appreciation for nuanced storytelling...

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Synopsis

Legendary hitman Juuzou, 39, becomes 13-year-old boy after wasp sting; must infiltrate middle school while evading assassins.

Juuzou Oogami 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 Juuzou ever return to his original form? Or will the assassins closing in on him end his second life before it even begins!? (Source: Official site)