Natsuko Yotsuya, also called Bon, is a teenager residing in a small town. Her friend, Miyu-chan, lives with her boyfriend in Tokyo, where she suffers from his abuse. Determined to rescue her friend, Natsuko teams up with her childhood companion, Rintaro Tomoda, known as Lin, and they travel to Tokyo. They enlist the help of a man they connected with on an online forum dedicated to “boys’ love” manga enthusiasts, and together they make their way to Miyu-chan’s residence.