1x4 - D_Cide Traumerei the Animation

Despite being a primary school student, he is an excellent knocker-upper. In front of everyone, he is mature and cocky, but always cheerful. But in his eyes, Ryuhei sees a shadow he shares with himself. They fight together against the Weird, but they don't know much about each other. Ryuhei can't leave him alone, so he expresses his feelings to him.