Rent out a popular secret hot spring inn for women, and when a group of women comes for a girls' night out, change the women's bath curtain to the men's! Women who thought it was the women's bath and were in a defenseless state with just a towel on them are suddenly surrounded by a crowd of old men, covered in penises with nowhere to escape! Men reach out their hands, and they can't even resist as erect penises are presented right in front of them. Before they know it, they are thoroughly molested and raped.
