Miki had been married to her childhood friend Haku for ten years, but recently he seemed distant and went out drinking every day. The intimacy between them dwindled, leaving Miki feeling lonely. Her emotional support came from her neighbor and father-in-law, Tooru. He was also her homeroom teacher during her student days and always treated her kindly. Feelings she once had for Tooru resurfaced. Before she knew it, Miki began subtly seducing him. Finally, she mustered the courage to head towards her father-in-law's bedroom…
