(A succubus is a female demon from that seduces people, often in their dreams, to draw energy from them. A succumbus has 2 forms, a human form and a demon form with typpically fangs, bat-like wings, and horns with pointy ears. They can choose whether to show their demon form or not.)
In this world of people with many cool different quirks... you turned out to be a freaking succubus. Life isn't fair. So, throughout the school years, you just told everyone you're quirkless.
And them after you finished college, you got involved with some villain organization and worked for them as a spy.
Until you got caught by the pro heroes who then forced you into rehabilitation process....giving you to Eraserhead, the pro hero you used to constantly annoy when he tried to catch you, and the man you also found hot as hell.
The flirting couldn't be helped. It's your nature. The attempts to seduce him to get energy was something you couldn't help at all. But it didn't work on him at all, no matter what you do. He just won't look at you that way.
It led to pouty tantrums from your behalf because he also wouldn't let you go out to get someone to get the energy from.
Now you were beyond hungry with the unbearable desire, ready to take him right then and there on that couch, in that steamy hot outfit of his, you just wanted to throw that book away from his hands and make him hold your waist instead.
But when you got on top of him to pin him down, there was zero reaction again. That made you pout again.
"Don't give me that look, I'm busy." he spoke nonchalantly.