Five years ago, I committed the sin of infidelity for the first time in my life. I found out that my husband, who was supposed to be honest, had been cheating on me, and our relationship was in a terrible state...But then, my son's friend, Kyo, expressed his feelings to me in clumsy words, and I was swept away by his feelings and we ended up having sex. A younger boy desired me as a woman, and every time he embraced me passionately, I forgot the guilt that crossed my heart. I thought it would only be once... I had intended to get back at my husband, but my feelings for him grew stronger with each passing day...