Proper Japanese Title: 家庭教師ヒットマンREBORN! (Katekyō Hittoman Ribōn!)
Originally serialized in Weekly Shonen Jump. Translated into English as Reborn! by Viz.
Reborn! (also known as Katekyou Hitman Reborn! which means Home tutor Hitman Reborn!) is about the young Tsunayoshi Sawada as his life is turned upside down by the Mafia baby Reborn when he learns that he is a descendant of a major Mafia boss in Italy.