
Seventeen-year-old Nanaka Kirisato is a high school student serious about her studies and goals in life. She frequently criticizes her best friend, Nenji Nagihara, for being a childish delinquent who spends his time fighting other boys. Then one day, after a heated argument with Nenji, she falls off a flight of stairs and suffers a brain injury, resulting in her mind reverting to that of a six-year-old. With this in mind, Nanaka's father and Nenji must keep her injury a secret as she struggles to live a normal life and grow up all over again.

as Taizou Kirisato

as Kuriko Aratama

as Nanaka Kirisato

as Yuriko Amemiya

as Nenji Nagihara

as Satsuki Arashiyama

as Jinpachi Arashiyama

as Magical Domiko

as Pikota

as Chemical Kemiko

as Yoshida

as Chie Kazamatsuri

as Mari Tsuyuki

as Yoshiko Shishido

as Yuriko Amemiya's mother