I'm Teppei

Teppei Uesugi has grown up in the mountains with his father, living as a wild child in search of a buried treasure. Isolated from society, he is as tough as weeds and acts as free as a bird, with no restraints or formal education.

His life changes completely when his uncle finds him and reveals that he comes from a prestigious family with five siblings. For the first time, Teppei must attend high school and live under his grandmother's strict rules. Despite his eccentric behavior and constant trouble, he soon discovers a talent for kendo, the Japanese swordplay art, and becomes the school's hero.