Mikoto Ochiai is ready to jump off the rooftop of her high school's building after she got rejected by the boy she loves. However, homeroom teacher Jin Haiba suddenly appears on the rooftop for a smoke, talked to her and saved her from falling down. He even asked her to go out with him rather than die.

Mikoto Ochiai siap melompat dari atap gedung sekolah menengahnya setelah dia ditolak oleh pria yang dicintainya. Namun, wali kelas Jin Haiba tiba-tiba muncul di atap untuk merokok, berbicara dengannya dan menyelamatkannya agar tidak terjatuh. Dia bahkan memintanya untuk pergi bersamanya daripada mati.