During the camping sequence when Ardyn reaches for Prompto, Prompto and Noct decide to go play some video games before going to sleep, leaving Ignis or Gladio (or both) sitting with Ardyn. Cue Ardyn making comments about Prompto being pretty and beautiful for a man, and continuing in explocot detail how he'd take Prompto's virginity until Gladiolus or Ignis snap and reprimand him with the harshest smacktalk ever known to Eos because no one ever should talk that way about anyone, especially Prompto

+Ardyn describes how pretty Prompto will be when he squirms, how he'll look when he cries, etc.

+Mentions of using chastity devices, cock rings, vibrators and toys on Prompto

+Ardyn going into detail about Prompto cumming untouched, being tied up, talking about various positions or forcing him to hump air or inanimate objects

+Describing gags and how he'll look as he drools around a ballgag or wearing a pair of soiled panties as he's put on a milking/fucking machine

BASICALLY Ardyn has all the minks and describes in detail to Ignis and Gladio what he'll do to Prompto