Nazuna yo Nazuna

A second-year student at Sakuraen High School, Momo, loses her student ID after being molested on a bus. Her best friend, Yomogi, also loses a book she was supposed to show Momo on the same bus. On the same day, a handsome boy named Serina Nazuna transfers into their class. Momo suspects him of taking her ID and follows him home, where she discovers he is raising four younger brothers and a younger sister. Nazuna explains he took Momo's ID to confirm her identity and took the book to help his family escape his cold-blooded father, with whom he now lives.