The main protagonist of Katekyo Hitman Reborn! At first Tsuna is a cowardly and useless junior high student known as "No Good Tsuna" because of his poor grades, wimpy attitude, and a lack of athleticism. Then a baby hitman called Reborn appears one day to train Tsunayoshi to become a mafia boss. Tsuna was chosen by the Vongola IX to inherit the role of the tenth generation Vongola boss. Now being forced by Reborn to be involved in his spartan-like training and forming his own Vongola guardians to become the pefect mafia boss.