Makoto Konno has two close friends who are both boys in her class. One of them is Kosuke Tsuda, her childhood friend and the other is Chiaki Mamiya.
It's far better for Makoto to play threesome ball game with them after school rather than to play with girls from her class. It isn't like they are dating each other or going steady. Their relationship is very casual and easy going. This is a time to spend a compassionate moment reserved for them. Because soon, they must decide their course of future before they become senior in their high school...