I had dated Haruka, a woman three years older who shared my hobby, for almost three years and decided to propose the next time we met. Yet she remained mysterious: we only met at my place on weekday afternoons, never spent a night together, and I did not even know where she lived. On the day of the proposal, I discovered that she was already married. Faced with the truth that we could never marry, I resolved to destroy everything in her life...