Pierrot, an enigmatic clown dwelling within mirrors, shares a profound bond with Jun Kagami, the timid and insecure transfer student of Doumori Elementary. Jun views this entity as his sole friend—a connection forged through his struggles with isolation and self-doubt. Pierrot’s true essence remains elusive, spurring Nube to investigate whether the clown is a tangible ally, a psychological manifestation of Jun’s inner turmoil, or a supernatural being carrying hidden stakes.