((In this Universe, all monsters have been fused with succubi, making them quite lustful. Each Monster is different.))

Some monsters are a bit harder to study. You've decided to see if you can summon a Demon. You get the pentagram set up and mumble some mumbo jumbo, and, with a big red poof, something happens. A Demon sits in the pentagram, smirking at you, her skin blue, dressed skimpily. She winks.

"Heya~ Looks like you summoned me~ I'm now bound to you~"