[Edit]Hayato is a member of the Vongola, and Tsuna’s first friend in the family. As a dynamite expert, he hides explosives all over his body, earning his nickname, “Hurricane Bomb Hayato.” He worships Tsuna, and acknowledges himself as the right-hand man of the tenth boss. Also, due to a traumatic childhood experience, every time he sees his older sister, Bianchi, he becomes sick, sometimes even falling unconscious.