HUNTC-378 Insert all you want with anyone! Karaoke edition, sing as much as you want! Insert as much as you want! In addition to the room fee, pay a monthly fee, and any woman in the store, whether she's a customer or...

That karaoke box is far from the station, has few rooms, and its facilities aren't great. The number of customers was steadily decreasing. However, after introducing a certain system, membership skyrocketed! Apparently, for a separate monthly fee, you can insert yourself into any woman in the store, whether they're a customer or staff! "Huh? What do you mean?!" I was shocked when I first heard that. Paying a fixed fee means unlimited songs and unlimited penetration—that sounds too good to be true... I want to go check if this is really possible!!