Uesugi Teppei and his father lives deep in the forest in search of a buried treasure. Isolated from society, Teppei became a wild child with no restaints until one day his uncle found him. Teppei finds out that he is actually from a very prestigious family with 5 siblings. For the first time in his life, he will have to attend school and live under his grandmother's rules. Can Teppei really adapt to his new environment?