Two guests in corsets

When you turn around, you see two people in corsets walking across the ballroom. You follow them to let them know you like their outfits, and to find out a bit more about what's going on here. The two strangers tell you that this is a debauchery party, and everyone in clothes has the right to use anyone who is nude for the night. They invite you to grab some pastries and drinks and watch the dancers.

Your new friends talk to you about the mansion, saying that it's a great place to explore and find new NPCs to sleep with.