Terajima Mikako became a boys volleyball team coach at a junior high school she has been assigned to. As an incentive for the team members who do not show the slightest enthusiasm, she promises to show them her boobs if they win a game.

A high school girl lives in a failing new town with her father, his second wife, and the wife's two children. She meets a top-notch student through a friend and begins dating. But since she lacks experience, she seeks assistance from an otaku specializing in dating sim games.