Synopsis: Tsuiraku JK to Haijin Kyoushi

Mikoto Ochiai, after being rejected by her first love, had contemplated ending her life by jumping off the school building's roof. At the verge of executing her plan, Jin Haiba, the physics teacher who was often the punchline of student's jokes due to his lackadaisical attitude, casually lights up a cigarette, and breaks her chain of thoughts. Intrigued about the events that led to her decision, unlike discouraging her from suicide, he makes a daring proposal if she would consider forming a romantic bond with him before giving up on life. Over time, the two start pondering on the reasons for continuing their existence and why embarking on a passionate relationship is not worth exploring.