On that day five years ago, I crossed the line of infidelity. When my husband's affair was discovered, it was my son's friend, Yuzuru, who conveyed my favor to me in poor words when I was depressed. I was swept away by his honest feelings, and even though I knew it was unforgivable, I was aware that my guilt was diminishing with each time I was asked by a younger boy over and over again. - The relationship that started with the feeling of guessing her husband was increasing, but her feelings for him increased day by day.