The wife has been back in her hometown for a week to give birth. Yota had been enjoying his first time living alone in a while when his wife's sister, Natsuhou, came over to help with the housework. Every time she cleaned, he couldn't help but get an erection seeing Natsuhou's tanned brown body. If this continues, he might make a mistake. He desperately tried to gather his rationality and maintain his composure, but Natsuhou reached out her hand towards his crotch as if mocking him…
