Katekyō Hitman Reborn!

Reborn!, known in Japan as Katekyō Hitman Reborn! (Japanese: 家庭教師ヒットマンREBORN!, Hepburn: Katekyō Hittoman Ribōn![a]), is a Japanese manga series written and illustrated by Akira Amano. It follows Tsunayoshi Sawada, a young boy who discovers that he is next in line to become boss of the Vongola family, a powerful Mafia organization. The Vongolas' most powerful hitman, a gun-toting infant named Reborn, is sent to teach Tsuna how to be a boss. It was serialized in Shueisha's Weekly Shōnen Jump from May 2004 to November 2012, with its chapters collected into 42 tankōbon volumes.