Following a failed confession to her first love, female high school student Mikoto Ochiai contemplates jumping off the roof of the school building. However, her thoughts are interrupted by the arrival of Jin Haiba, the physics teacher known for being a slacker and the butt of students' jokes. Calmly, he lights a cigarette and asks for an explanation of the events that led her to this precipice. Rather than dissuade her from killing herself, he makes a request—will she enter into a romance with him before she dies? Together, the two gradually ponder why they should keep living and why they should not love each other in earnest.
Episodes
Mikoto reflects on her childhood memories and asks Jin whether he feels so at ease around her because they may have met somewhere in the past.
Kazuma tells Jin that he wants to have a man-to-man talk. Mikoto’s older brother, Tsukasa, then shows up, and the conversation between the three men quickly becomes heated.
Rumors begin to spread that Jin may be the person Mikoto has feelings for. Amid all the speculation, Mikoto goes to Jin’s house to look after Monroe.
Mikoto feels dejected after being invited to karaoke with her classmates. She falls asleep and dreams of spending her youth together with Jin.
Mikoto’s older brother, Tsukasa, comes to visit her class. He nearly bumps into Mikoto and spots her together with Jin and Kazuma.
Jin asks Mikoto out on a real date. At last, the full story of their shared past, something only Jin has known until now, is revealed.
