Buraiden Gai

Thirteen-year-old Kudo Gai, a mischievous boy with no family, resents classmates who take their freedom for granted while being supported by their parents. But Gai realizes that he, too, is being raised in an orphanage, and tries to make his own way independently. His actions land him in trouble: framed for murder, he is sent to a place in an unknown location called the Human Institute.