It was the winter of five years ago when I committed the sin of infidelity. At that time, Yuzuru-kun, who was unfaithful to her husband, shook his body and honestly expressed his favor to me, who was injured. I wanted to fill my loneliness, but even though I knew it wasn't good, I responded to that thought. A boy has grown old. Every time he was asked, his flickering feelings of guilt were drowned out by intense sex. At first, I intended to beat my husband to death, but my feelings for him grew stronger day by day.