I have a high-key need for Ravus finding out the joys of having a mechanical arm. Namely that he can use it to get himself off just as well as he could with someone else.

Bonus Points:
Those fingers are sharp. There's a learning curve. Ravus ends up getting off just as well with a little pain involved.
Arm possibly being controlled by Ardyn? Ravus doesn't know.

Little things that are optional:
I'm super into Asphyxiation and Aphrodisiac use. If you have any way of adding that into the story (only if you want!) then you have a friend in me, fam.

Go wild! I'm not picky. You don't have to do any pre-approval on plot :)