Hensokukei Quadrangle

A high school student, Maki Eiji, was known for skipping classes and engaging in fights. One person who treated him kindly was Chino Kotoha, but after being targeted by delinquents due to their connection, she suffered an attack that left her deeply affected. Years later, upon reuniting with her, Eiji feels intense guilt and regret. Unexpectedly, a mysterious woman in revealing clothing appears, offering to send him back in time to correct past mistakes. He accepts, but the situation proves more complicated than he anticipated. Kotoha had her own hidden struggles during that period, and Eiji might not be the sole individual attempting to alter history.