"I'm the only one in my spare time?" One day after school, my heart was mourning alone. All my classmates are not busy with club activities and salon reservations. In addition, my best friend Asuka says "Hurry up a little" and leaves. On the way home, I hear a mysterious voice. It was from "Himamashita Park". The heart that was just free, went inside to be guided. Then, the park manager, Tokiji (Jin Katagiri), who suddenly appeared, points to something like a magic circle drawn on the ground and tells me that I can kill time here. And it is said that "killed time" can be used only once when it is important. The heart that I will try immediately thinks that I will use the time I killed for something ...