>>11364472
Granted, you are now an apprentice succubus, in the sense that you're a human with the potential to become a succubus after being sufficiently trained by another demoness. You were a volunteer cleaner in an old library, and you accidentally summoned a succubus while handling an old grimoire; said succubus recognized your potential and wasted no time in convincing you to loan your soul to her.

There was a slight hiccup when your mistress realized that you are very, VERY subby. Like "desperately craves headpats" submissive. That's kind of a problem, because succubi are supposed to tempt humans and push them towards the road of depravity; but when it comes to leadership skills to convince people to do what you want and be naauughtyyy, you are basically the equivalent of a wet sponge.
For a while, your devilish owner decided to just train you as a sex pet. You know, to help her relax in-between "targets", eating her out, letting her sit on your face, or make you sit in her lap for cuddles. Then she discovered that she can turn you into a different kind of succubus - a passive kind that tempts people into doing naughty things to her. You know, the kind of girl that looks very gropeable on the train, come on, just put a hand on her tits, you can always blame the train car being too over-crowded. And every time someone falls to temptation, you would passively siphon a tiny bit of their goodness, making them a tad more tired and slightly more inclined for further lewdness. You aren't going to turn people into depraved sluts overnight, but months or years of daily temptations might do the trick.

But that will happen in the future. In the present, your mistress will still have to train you properly as a sex pet, but also begin to teach you how to tempt others, how to look like a convenient victim, how to create situations where people will feel inclined to dominate you. She will notice your giant lesbian tendencies, and adjust her training accordingly.