[Hashida Mamoru] Sex Life with Stepmom (Shiritsu Inwai Gakuen) [YxTL]

Eager newlywed stepmother Chizuru tries to play house for her husband Katsuya and his cold, dismissive son Shinya, only for the boy's rejection of her 'mother act' to mask a far bolder agenda. The sheltered wife, who has never known a man besides her husband, is left shaking when she sees how different her stepson is, and her guilty apologies do nothing to stop her body's surrender. What begins as one overwhelming afternoon melts into a shameless morning ritual, with Chizuru servicing him beneath the breakfast table while her oblivious husband eats just across from her.