Adult neighbor Sakura, whom the couple often let use their bath years ago, visits their home again. He accidentally peeks in and cannot look away from her overflowing G-cup tits and slender waist—only to be caught. Instead of getting angry, the sexually inexperienced woman has dripping-wet sex with him right there in the bathroom. From then on, she repeatedly returns to borrow the bath, and he keeps fucking his now voluptuous neighbor even with his wife at home.