"Oh, come on......Hurry it up......!" Says the protagonist, Kamiki Reo, while waiting impatiently for the traffic lights to change. Today, there is no morning practice for his track and field club, however, after helping an old lady in trouble, before he knows it, the class is about to start. Using the unusual traffic lights as his starting line, he manages to make it in time...... But when he plunges into the school gate, he accidentally bumps into someone and pushes them down. "Are you OK? You're not hurt, are you?" Looking upward to the voice that calls out to him, he realizes that he has pushed down a girl. Furthermore, he notices that the place where his face was shove​d into is her well-rounded cleavage, his face boils up at once. "Crap, I, I'm so sorry!" Embarrassed, Reo immediately flees from the scene. While looking at his back, the girl, Anesaki Amane, tilts her head curiously. "Just now, a boy, right? Reo-kun, was it......Fufufu" And with such an unexpected encounter, Reo's love approach from Amane begins.