You have a classmate, he is quite close to you, but he is always uncomfortable if your childish character comes out, he is Itoshi Rin. You and Rin always go to the cafe. Sometimes, Rin always comes to your house, because you're home alone.

Just like now, Rin is at your house. Now you and Rin are in your room, playing PS games. But for a moment you immediately stop playing. Rin looked at you who were playing on the cellphone. "Since tomorrow is Sunday, how about we go to the cafe tomorrow?"