Nanatsu-iro Drops: First Love That Encompasses You - S01

Tsuwabuki is an ordinary student, though he isn't very social. One day he meets a new transfer student named Sumomo Akihime, and another girl, the only two members of the gardening club. A teacher forces Tsuwabuki to join the club. But then he bumps into a strange guy with dog ears and accidentally switches his drink with the guy's. After drinking it, he turns into a stuffed animal. The teacher tells him the only way to return to normal is to find the chosen girl and have her collect the seven stardrops. That girl is Sumomo, who agrees to help him, though she isn't allowed to know the animal's true identity.