What the hell is going on with them?

Shiroi_Kumo said in comment #2603451:

What the hell is going on with them?

The guy in the background appears to have frozen time, had sex with the girls, left them in these positions, and just unfrozen time to watch the aftermath.

GreyOmega said in comment #2603490:

The guy in the background appears to have frozen time, had sex with the girls, left them in these positions, and just unfrozen time to watch the aftermath.

Thanks for the explanation