Ямадзакі Кента

A shut-in boy that hasn't attended school for months on end. Kenta is bitter and depressed, locking himself away in his room, with Saku being chosen by his teacher to bring him back to class by any reasonable means necessary.

After reinventing himself with Saku's help, Kenta joins Saku's friend group and becomes good friends with everyone in Team Chitose.