A teenager Perman, Mitsuo Suwa begins the journey of discovering love. As he struggles with his responsibilities to protect Tokyo with the entire country, he finds himself drawn to a powerful yet strict and compassionate teacher and founder of Perman's union, Birdman. Through a series of events and encounters, they develop a deep connection and eventually explore the depths of their feelings for each other in a beautiful and touching romantic moment. More than just authority and companionship. They both realise that they feel mutually attracted to each other's charm to the extent that they can't resist. warnings : age difference