High school student Yuki Hase wants to become close with classmate Kaori Fujimiya 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.

One Week Friends

After Moe Sasaki's father died, her family moved to her mother's hometown. At her new high school, Moe has a hard time getting along with her classmates and becomes a loner. She then meets firefighter Kyosuke Ebihara and falls in love with him. Thanks to him, Moe's personality becomes brighter. Kyosuke also slowly opens his mind to her, but their romance makes little progress.