Sister, you're even better than your younger sister... Shiratori Sumirei DTKM-012

Everyone was overjoyed with his wife's pregnancy, and they had been quite restrained with their sex life during this time. However, the young husband's libido had reached its limit, and he could no longer suppress it. Then, suddenly, he started living with his wife's older sister, and the sight of her voluptuous figure aroused him, causing his sexual desire to become uncontrollable...