"Um...," he eventually said, drawing the attention of the creature, who had started looking around idly herself, "Any... any suggestions? I mean, I have this problem with a madman trying to kill me, but aside from that..."
This time, the other eyebrow quirked up. "A madman, eh? Wizard-type, like you?"
Harry nodded, but shook his head immediately afterward, "Yeah, but you don't- you don't need to get involved with that."
She shrugged again, "Your choice, I suppose. I mean, I could take him back home. Get rid of him for good, benefit us, too."
Harry frowned again, "No... this is my fight. He- he..."
"Family?" Her voice was solemn, quiet, if still a little high and soft for his tastes.
This time, Harry nodded. "My parents."
"Bastard," she murmured, then looked up at him firmly, "Then I propose this: When he's gone, I go. Until then, I service you as I said, including helping you against your madman. Keep your morale up, so to speak. Or anything else you need."
This time, Harry full-on scowled. "No. You don't need to fight-"
"I didn't say fight," she raised both hands as if to ward off his anger, but did not appear at all cowed, "I said help you. I can fight. We all can. But I can also die, and I have no intention of doing so. If it comes down to it, then yes, I'll put my life - or more likely, my existence on this plane - on the line for yours. It's still fair, because it's really unlikely this guy knows how to kill a Succubus permanently, and even less so that he has the balls to do it."
Harry murmured, "I wouldn't doubt either," to himself, but she didn't appear to hear.
Instead, she reviewed, "So, I'm yours to use however you see fit until this wizard madman of yours is dead. In return, I get your semen at least weekly, or more if I request it, up to once a day maximum but more if you want it, for your health, because Contracts are designed, these days, to protect us both equally, and your tacit-slash-explicit approval to gather semen from elsewhere in my range to take back home when I go. Anything else?"
Harry thought for a moment, then asked, "Well, I mean... what are your... preferences? I mean... I may not be experienced, but I know girls like... well, some things more than others."
"It's sweet," the little creature grinned the same dazzling one she'd used first on him, "that you care! But I can assure you, as long as it's sex, I'll enjoy it. I am a Succubus. But I like the same things you like, for as long as I'm here. It's partly due to the nature of Profligull's ritual, and partly due to our nature. We like sex. All of us, in all its forms. We like our partners to bring us pleasure, and we like to bring pleasure to our partners. Whichever works for me, I enjoy both."
"But... er..." The more Harry thought about this, the worse - and better - it sounded. Sure, free sex, as much as he wanted! That was great!
But... at what cost? Apparently not his soul, or his life, but... he'd all but enslaved this creature.
"Ah, I see where you're going," she growled, then smiled again, "But let me assure you, your own personal feelings of guilt are, in this case, entirely misplaced. When a Summoning is performed, we choose who goes. I volunteered. So there's no slavery at all. I wanted to come. I wanted a Contract. And the longer I'm here, Mr. Too-Much-Heart, the more I want to stay for a while. And yes," she finished, smirking upward at him, "It's plain to see on your face. No, I can't read minds. Not yours, because you're still the Summoner. As a Contractor, I will be able to. I can also read others in a fashion, if I try. It's more a combination of empathy and reading body language, though."
"Still," Harry replied, shaking his head again, "That doesn't answer my question. What, aside from pleasure I guess, and- and semen, do you get out of this? It could kill you!"
"The pleasure and semen are enough, I can promise you," she replied, "and as I said, it's not very likely I'll die. The fact that, as a succubus, I will personally grow more powerful from your semen as my Contractor is an added bonus to me. Think of it... well, you're a wizard, so this is a magic school, right? Think of it like this: every time I get your personal semen to use myself, it's like I'm attending a class for magic. In fact, I do actually get magic - mana - out of it. That's used to power our growth, or our abilities beyond the normal. Flight. Actual mind-reading - not something I've mastered yet - and so on. So I'm getting something equivalent to an education, as well. Or levelling up in a video game, if you prefer."
That - well, those - at least made some sense to Harry, though he'd only rarely been able to sneak a turn on Dudley's computer or consoles. "Al- Alright, then... Um... I should probably ask what side benefits there are for me, right? If you're getting this 'training'?"
This time, she smiled even wider, then licked her lips, making Harry's cock jump again, "I'm glad you asked, Master," she practically purred. "Because yes, I was planning on it. You want sex. Any teenaged boy does, right? Well... I like to think that, even though this is my first Summoning, I'm pretty good at that. But I also know how teenaged humans think. Aced my psychology classes, you know. There's other girls out there, right? Girls you wouldn't mind slipping that thing into," she finished, gesturing needlessly downward with her chin.
Harry blushed, but after a few seconds, nodded.
"Well, I can help you there, too. It'd be my pleasure."