Kill Blue
Kill Ao
Juuzou Oogami is a legendary hitman with a perfect track record—he's never failed a job, no matter how dangerous. After eliminating a major criminal organization, he gets stung by a strange wasp and blacks out. When he comes to, the ruthless 39-year-old assassin has been turned into a 13-year-old kid. His boss wastes no time: "Go undercover at a middle school." So now Juuzou's stuck navigating student life alongside eccentric classmates, everyday drama, and actual threats. He's got two big problems—figure out how to turn back into an adult, and stay alive while other assassins hunt him down. It's not exactly the second chance he was hoping for.
Content compiled by AnimeList.moe from publicly available sources.
Kill Blue
Kill Ao
2026
Synopsis
Juuzou Oogami is a legendary hitman with a perfect track record—he's never failed a job, no matter how dangerous. After eliminating a major criminal organization, he gets stung by a strange wasp and blacks out. When he comes to, the ruthless 39-year-old assassin has been turned into a 13-year-old kid. His boss wastes no time: "Go undercover at a middle school." So now Juuzou's stuck navigating student life alongside eccentric classmates, everyday drama, and actual threats. He's got two big problems—figure out how to turn back into an adult, and stay alive while other assassins hunt him down. It's not exactly the second chance he was hoping for.
Content compiled by AnimeList.moe from publicly available sources.
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Kill Blue
Kill Ao
Juuzou Oogami is a legendary hitman with a perfect track record—he's never failed a job, no matter how dangerous. After eliminating a major criminal organization, he gets stung by a strange wasp and blacks out. When he comes to, the ruthless 39-year-old assassin has been turned into a 13-year-old kid. His boss wastes no time: "Go undercover at a middle school." So now Juuzou's stuck navigating student life alongside eccentric classmates, everyday drama, and actual threats. He's got two big problems—figure out how to turn back into an adult, and stay alive while other assassins hunt him down. It's not exactly the second chance he was hoping for.
Content compiled by AnimeList.moe from publicly available sources.
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Kill Blue
Kill Ao
キルアオ