17-sai

Arisu discovers a love letter addressed to Suzuko hidden in a book, written by Himura Tsubaki. She contacts Tsubaki using the number he provided, pretending to be Suzuko. Meanwhile, Koibana Yuuka, a young hostess, is pursued by men who believe she is sexually experienced, though she is not. When a client named Hiroshi asks her to help him become more masculine, their interactions lead to unexpected feelings. In another story, Nakura Yuu, after witnessing her boyfriend cheat in middle school, avoids romantic relationships in high school. When her close friend Kashiwada becomes intimate with her while drunk, she is hurt when he later dismisses the incident. A final narrative follows a girl who finds an ideal partner but struggles with her own insecurities, which threaten their bond.