VENX-176 Sister-in-law is sexually immoral.

It has been two days since I saw my wife off on her trip. The living room has gotten out of control. The savior that appeared is Kaho, the sister of my daughter-in-law. Although surprised by the unexpected visit, Kenichi is very grateful to Kaho for helping with the housework. That night, while Kenichi was relaxing in the bath, he was attacked by Kaho, who was naked. "Sister-in-law, what are you doing!?"