Nanaka 6/17

Seventeen-year-old Nanaka Kirisato is a fiercely dedicated high school student, driven by her academic ambitions and clear goals for the future. She stands in stark contrast to her childhood friend, Nenji Nagihara, a reckless delinquent who wastes his days brawling with other boys. Frustrated by his immature behavior, Nanaka frequently scolds him, urging him to take life more seriously. However, their volatile dynamic takes an unexpected turn when a heated argument between the two ends in disaster. During the confrontation, Nanaka accidentally tumbles down a flight of stairs and sustains a severe brain injury. When she regains consciousness, the brilliant teenager has vanished; her mind has inexplicably regressed to that of a six-year-old child. Thrust into a world she no longer understands, Nanaka must navigate the complexities of adolescence with the innocent perspective of a first grader. To protect her from the consequences of her condition, Nanaka’s father and a deeply remorseful Nenji make a pact to keep her injury completely hidden from the outside world. Together, they face the daunting challenge of guiding her through daily high school life while concealing her secret. As Nanaka struggles to maintain the illusion of normalcy, she embarks on a poignant journey to grow up all over again.