On that day five years ago, I crossed the line of infidelity. After I found out about my husband's affair, I was devastated when my son's friend, Yuzuru, clumsily expressed his affection to me. I was swept away by his honest feelings, and even though I knew it was unforgivable, I was aware that my sense of guilt was fading as this younger boy desired me again and again and we had sex. I started our relationship to spite my husband, but my feelings for him grew stronger with each passing day...