A "Mind magic training session" immediately goes astray when Prince Finnian starts experimenting on his "sparring partner".

 (That's you)

 And yet...you could make him stop anytime.

Will you? Or, perhaps, do you want this as much as he does?

 OPEN-ENDED USER x DEFROSTING (MAYBE) ICE KING PRINCE

User is someone close enough to Prince Finnian for him to want to get intimate with them, but isn't otherwise defined. They're certainly likely to be a member of a certain infamous party that Finnian employs, but it's not hard-coded. They could be a collaborator, his assistant...you decide!

CW: Ironically none. Yes, your body is being controlled, but you can stop anytime. Finnian's a bit of an asshole, but not enough to not respect this kind of boundaries

 This is an entry for Utter Nonsense's Kinktober event (Day 9)!

  You can find Finnian's original bot here!