Gakupo's face is amazing

Ok, Len is enjoinig the moment, but what´s up for the other two?

I'm only guessing from the context of the parent post... that maybe they were doing something similar to truth or dare? It looks like Miku got a "fortune" that specifically said to have sex with an old man which leads me to believe some one gave it to her. Given the reaction of the boys I'd almost think maybe they didn't think she'd go through with it?

That said I think Kaito is enjoying it, too, he's just trying to not show it as much. And Gakupo just seems upset, possibly because he lost a bet or something?

Again, just guessing.

So they do have cameras in those baths

Maybe they're just watching staged porn. The plot is typical(a hot girl is not only allowing a bunch of ugly dudes to bang her but also appears to be "pleading" for it).

LOL
Gakupo is jealous
Kaito is drooling
and Len is Fapping XD