The series details the lives of four main characters named Natsuki, Tomoya, Keiichi, and Tsuyoshi. They spend their days trying to have fun by finishing their studies and debating about romance. Natsuki, one of the main characters, has a crush on a girl named Anna at school, while others often get involved in their relationship.

Natsuki, Tomoya, Keiichi, and Tsuyoshi are high school students and close friends: The four boys have no club activities, and they hurry through their studies so they can spend their days having fun. Their main topic of interest: love. Natsuki has an unrequited crush on Anna, a girl from another class, and his friends keep meddling in their relationship.