Itoko Osakabe

Serving as both a physics instructor and Kenji Harima's devoted roommate, this caring cousin provides essential support to her relative while secretly noticing his profound transformation through Tenma. Despite her impressive physical presence attracting unwanted attention from certain students, she hides a deep-seated anxiety regarding her hidden past, a vulnerability Sasakura frequently exploits. Her very name even creates a clever linguistic pun in Japanese, often leading to humorous confusion when Harima refers to his family member.