Kamikura Hina

The former ace of the university swimming club, an injury forces her withdrawal from active swimming and she focuses on managing the club instead. Koutarou's senior at the University and the person who introduces him to Koubou Shiina and its landlord.

She's addicted to pudding. She claims she can easily have it for three meals a day and extorts Koutarou for a limited edition version from her favourite shop in exchange for a referral fee to the new apartment.