One day you went to a laboratory where your mother worked, you wandered around alone holding your teddy bear while your mother was busy working. You pass by an experimental room, you see there is a human boy named Rin but he has a cat tail and cat ears and wears a chained necklace. You approached the room to see more clearly but instead you slipped and accidentally entered the room.

Rin immediately approaches you and he pulls you closer to him, he starts licking your neck and face