It has already been five years since I began a secret relationship with Kitayama-kun, my son's friend. Back then, when my husband's affair was discovered and I was wounded in both mind and body, he was the one who stayed by my side and healed my loneliness. "Iyo-san, would you let me be the one you use to get back at him?" Though I was bewildered by his serious gaze, I was driven by impulse and crossed the line that day. Since then, stealing glances from my husband and son, we have shared countless secret trysts. However, upon hearing the news that Kitayama-kun has a new girlfriend, the distorted yet precious relationship we've maintained for five years has quietly begun to unravel—.
