I heard rumor once that such a place in Hachinohe existed, where you could participate in a live sex show for free. It was called "DX", and was a real hole in the wall dive of a place. Needless to say, I never found it.
Come on, you literally hit the jackpot and you refuse to go up there?
Still, I like how she can just bend the rules the way she wants and let him have an extra turn to have sex with her. I suppose when you yourself are the main attraction you get away with changes like that.
Also, his Senpai was quite the wingman! Dragged him there, and in doing so allowed him the winning jackpot ticket...And also suggests going again by that ending. Considering our protagonist has the luck of a Hentai Protagonist, chances are he'll win everytime he goes.
I dunno man, I'm not sure I could get it up in front of a crowd (of pretty much all men), especially with all those hecklers. Guess I'm not alpha enough. Plus she's gonna go fuck a bunch of other dudes afterward, kinda meh to give up your first time to a woman who won't even remember your face the next day.