A story about three former broadcasting club members who gathered for the first time in several years to trace the memories of their days at the school building of their old school, Shinome Girls' High School, which was decided to be demolished.
Seiichi is the owner of a flower shop. He enjoys his peaceful single life. Kiho runs the ramen restaurant left to her by her father, but she's thinking of closing it.
Arata Kaizaki is 27-years-old and unemployed. He quit his prior job after working for the company for 3 months. Arata Kaizaki decides to take part in a research program. He takes medication that makes him look younger and he is to attend high school for a year. There, he falls in love with female high school student Chizuru Hishiro.
En cierto parque, hay un hombre misterioso, que tiene ojos rojos y un traje negro, al que las personas pueden ir y pedirle que mate a alguien. Nunca se le puede culpar por sus asesinatos porque no toma medidas ilegales. Su fuerza está en el poder de la sugestión y la disposición de los eventos. Acepta estas peticiones, burlándose en privado de la insensatez de aquellos cuyos imprudentes deseos concede.
Hana Ichii attends a school that she admired since she was a child. One day, she wakes up and finds herself locked in a cage with her classmates. They are forced to take part in a survival game using their cellphones.
