Buraiden Gai

A 13-year-old boy named Kudou Gai is described as mischievous and without family. He resents his classmates for their freedom and the support of their parents, which he believes they take for granted. Despite his attitude, Gai also resides in an orphanage, and he tries to assert his independence. His efforts lead to conflict, and he is falsely accused of murder. As a result, he is sent to a facility known only as the "human institute," whose location is not disclosed.