I married Tsukasa, the woman I'd been in love with since college. Back then, she was dating Kimura, a womanizer who repeatedly cheated on her and toyed with her feelings. I confessed my feelings to Tsukasa, we got married, and our life together was going perfectly. She told me Kimura was planning to attend our alumni reunion, but I had kept refusing to let her go. Since our marriage was going so well, I finally agreed to let her attend. I felt safe—surely nothing could happen even if Kimura was there. She was supposed to come home after the first part of the party, but gradually I lost contact with her. After midnight passed, she still hadn't returned.