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.
Taishi Nakagawa
Yuna Taira
Mahiro Takasugi
Elaiza Ikeda
Sae Okazaki
Yudai Chiba
Mikako Ichikawa
Natsuna Watanabe
Ayame Misaki
Yuki Kameda
Mirai Maiumi