Nanaka 6/17

Synopsis

Seventeen-year-old Nanaka Kirisato is a serious high school student with big ambitions, often scolding her best friend Nenji Nagihara for his childish antics and frequent brawls with other boys. After a fierce quarrel with Nenji, she falls down a flight of stairs and sustains a head injury, which causes her mind to regress to that of a six-year-old. To keep her condition hidden, Nanaka's father and Nenji must conceal the truth of the accident while she struggles to adapt once more to everyday life and go through a second period of growing up.