Kill Blue

Juuzou Oogami is a living legend in the criminal underworld, a 39-year-old hitman who has never failed a mission. But his perfect record takes a bizarre turn when a mysterious wasp sting transforms him into a 13-year-old boy. Before he can even grasp his new reality, his boss issues an unprecedented order: infiltrate a middle school. Now, Juuzou must navigate the chaotic world of adolescence, from colorful classmates to youthful drama, all while assassins from his past close in. Can the world's greatest killer survive the social minefield of school while fighting to reclaim his old life?