 The anime is an adaptation of Akira Amano's manga series of the same name, which was first serialized in Japan's "Weekly Shōnen Jump" in 2004.The series centers around the life of Tsunayoshi "Tsuna" Sawada, a timid boy who learns he is the great-great-great grandson of the founder of the Italian Vongola Mafia family.Tsuna, who is the only living heir, must learn to become a proper Mafia boss and is required to undergo training from the Vongola's number one hitman, an infant named Reborn.