High school student Yuki Hase (Kento Yamazaki) wants to become close with classmate Kaori Fujimiya (Haruna Kawaguchi) who is alway by herself. Kaori Fujimiya refuses to become close with Yuki Hase, because she forgets her friends every new Monday. Even though Kaori tells Yuki why she doesn’t want to become friends, Yuki still wants to become close to her.

Taira Ashihara and his younger brother Shota live by themselves in the small seaport town Mitsuhama in the western part of Matsuyama, Ehime Prefecture. Whenever Taira spots someone who looks tough, he provokes them into a fight. Yuya Kitahara becomes interested in him and the two go on a violent streak against people on the street, then they steal a car and head out of town with Nana who was in the car when they stole it. Meanwhile, younger brother Shota comes to Matsuyama to find Taira