A lewd stepfather who has retired and is now free to join his wife

Nami is busy with her husband's work, and is beginning to feel anxious about not only having sex at night, but also having trouble talking. He is comforted by his father-in-law, who has given him advice, and regains his energy, but then his father-in-law's behavior begins to go crazy... One day, when they were alone as usual, her stepfather while bathing, she asked Nami to wash her back, which is unusual for her to do so. However, my father-in-law's eyes were glued to the nipples that gradually became wet and raised up as her clothes were gradually wet and she was glued to her eyes...