Hibiki, the daughter of a wealthy family, was chasing Kazuya, a motorcycle racer. One day, she sees Kazuya cheating on her with a female entourage. Hibiki climbs to the roof of a building to commit her suicide, but she meets Hyo on the spot with whom she fights. She was a wandering Hyo looking for a place to die, but she got into trouble with Hibiki and Kazuya, met a motorcycle, and started running on the circuit.