To start with, a bit of supernatural cross-dressing slimy tentacle femdom 
The backstory is that a naïf teenager has 'Mistress Morrigan's Leotard fetish' (remember to read right-to-left)
With the aid of as friend he summons the succubus from her home in Demonworld and when they have sex the effect of his virgin semen is to spread the 'Morritard' fetish to her. She enjoys this all so much she makes an offer, if they swear to forgo human women they can pay visits to her in Demonworld. When they accept they're given outfits of leotards, tights and boots to match hers.
So, here's what happens on a trip to Demonworld:
The backstory is that a naïf teenager has 'Mistress Morrigan's Leotard fetish' (remember to read right-to-left)
With the aid of as friend he summons the succubus from her home in Demonworld and when they have sex the effect of his virgin semen is to spread the 'Morritard' fetish to her. She enjoys this all so much she makes an offer, if they swear to forgo human women they can pay visits to her in Demonworld. When they accept they're given outfits of leotards, tights and boots to match hers.
So, here's what happens on a trip to Demonworld:
