YOUNG&FINE うみべのまちでぼくらはなかよしだったか

The main character, Haino Katsuhiko, was dating a classmate, Arai Reiko. Although he considers his life to be quite privileged, he feels somewhat trapped. One day, Izawa Manabu, who has been assigned as a high school teacher, comes to stay with the Haino family. The story depicts the relationship between the protagonist, his girlfriend, and Izawa, who lives under the same roof.