Kill Ao

Juuzou Oogami is a legendary assassin who has never failed a mission, no matter how impossible. One day, after wiping out a powerful organization, he is stung by a mysterious wasp and collapses. When he awakens, the fearsome 39-year-old assassin has transformed into a 13-year-old boy. Before he can process what has happened, his boss gives him 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 imminent dangers. Will Juuzou ever be able to return to his original form? Or will the assassins closing in on him end his second life before it even begins?