Knicker Knight
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A Deal With the Devils Part 4
🕑 Added 2025-08-14 03:01:00 +0000 UTCSorry about how weird my schedule has been this week. I'll be back home on Monday, at which point I'll get back to my normal schedule. There's a chance I won't get a chapter up tomorrow, because I'm travelling, but I'll try.
Harry sipped his coffee. It was absolutely perfect, as it always was down here. Really, for a place with such a bad reputation, the Underworld had lovely food.
Maybe that was just what the Gremory family had access to, though. They were rather rich. Rich enough that when he and Rias had been looking to settle down, they’d been able to do so in an absolutely fantastic villa in a pleasant corner of Gremory territory… Once Rias was finished with school, at least.
That had been a shock to Harry, learning that his wife was apparently, despite all the near-immortality of devils, actually the same age that she looked. Apparently devils matured at the rate of normal humans, but once they reached their physical prime, they remained in it for centuries. Sirzechs, her protective older brother, was already 800.
Rias and Akeno finished school, Harry was introduced to the rest of her peerage—which consisted of only three servants—and then they’d been married.
The ceremony had been a no expenses spared type of affair, but Harry preferred the honeymoon. He’d taken Rias and Akeno touring all the best parts of the magical world… although they struggled to make it out of their rooms more often than not.
And now they were here, relaxing the summer away in the Underworld. The long table they were eating at was piled high with food, which Harry, Akeno and Fleur were helping themselves to. Rias, however, was picking at her eggs.
“Is something wrong?” Harry asked.
“It’s nothing of note,” Rias said. She pushed back her plate. “I’ve had enough this morning.”
She left the room without saying anything else, causing Harry to look at the others.
“There’s definitely something wrong, isn’t there?” he said.
“There must be!” Akeno rested her chin on the back of her hand, frowning and pouting cutely. “Last night, she only ate me out once! She ALWAYS comes back for seconds!”
“Egregious,” Fleur said, sipping a steaming cup of tea.
“She hasn't mentioned anything to either of you?” Harry asked.
“Not more than she just did now,” Akeno said.
“If she has not told Akeno, she would not have told me,” Fleur said.
Harry frowned, nodding thoughtfully. Fleur was right: it was rare for Rias to hold anything back from her best friend. Although all of them had grown extremely close after multiple years of living together, it was undeniable that Rias had the deepest bond with Akeno, who she’d lived through the most things with.
Harry had been planning to tell her today, anyway… But oh well. He’d just have to figure out what was bothering Rias.
Over the rest of the day, that repeatedly proved to be difficult, however, because she was avoiding him. She did it politely, but when he tried to strike up a conversation she wouldn’t carry it on long, and always found an excuse to leave the room. When she excused herself from dinner much the way she excused herself from breakfast, Harry found himself in the same position back at the table with the other two girls.
“What could it be?” he wondered.
“There are lots of things that can trouble a young girl,” Fleur said. “For a devil, that is even more true. They are not the most emotionally stable. I would know.”
“That’s why the sex is so good,” Akeno whispered cheekily.
Harry wracked his brain. He was almost certain that he hadn’t done anything wrong. Just days ago Rias had been acting normally, and he hadn’t done anything unusual that might upset her. So why was she in a mood like this?
Harry scratched his head. He thought as deeply as he could, staring at the table, before growling without warning and knocking back his chair.
As he paced away from the table, Fleur asked, “And what are you going to do?”
“The only way we’re going to figure out the answer is if Rias tells us,” he said.
“But she has been avoiding our questions,” Fleur reminded him.
“I know she has,” he said. “So I’m going to take that option off of the table.”
Harry walked through the large mansion they were living in. He found Rias in the living room, reading a book while sitting in a cushiony armchair.
“Harry,” Rias greeted him politely when he entered. “What can I help you with—”
Harry kissed her.
He tasted her cherry lip balm, pressing his lips into hers. Harry bent forward in order to kiss her, encircling her cheeks with his hands and holding her neck still. Rias’s shock was palpable… but it was soon replaced by other emotions. He could tell she had been skimping on her and Akeno’s ‘cuddle’ sessions recently. Devils had nearly boundless horniness, and when they ignored it for too long, their bodies got like this.
Rias moaned just from the feeling of his hands and the taste of his tongue. Her thighs clapped together, making the casual summer dress she was wearing flutter. She quickly started rubbing her thighs together, trying to weather the arousal thrumming through her crotch.
It didn’t take long for Rias to start kissing Harry back. When he pulled away after thirty seconds, Rias was so absorbed that her lips stayed puckered for a while.
“Wh-What!?” she stammered when her brain caught up.
“You have a problem,” Harry said. “Tell me what it is.”
“I told you, it’s nothing—” Rias said.
Harry grabbed her through her dress right around the crotch, sinking his hand between her thighs. Rias’s back arched as a throaty moan filled the room.
“Whatever the problem is, it’s making you ignore me,” Harry said. “You’re even avoiding Akeno. That’s making you pent up… To the point that you’re about to pop.”
Harry’s fingers tightened. He could feel Rias’s warm thighs all around his fingers, and her soggy crotch squelching underneath the dress.
Rias grabbed his forearm with both hands. She pushed him back, and Harry immediately listened, retracting his hand. His concern grew.
“Seriously,” he said. “Can you tell me what’s wrong?”
“Promise you won’t laugh?” Rias asked.
“I promise,” Harry said. “As long as it’s not TOO silly.”
Rias spared him a glare, but soon dove in anyway.
“I like this life,” she said. “I’m happy living with you and Fleur and my peerage. I’m so glad that you saved me from Riser, and somehow even won over my family… I never would’ve dreamed this was possible when Fleur first summoned me. That’s why I’m so upset. Because it can’t last!”
“Why can’t it?” Harry asked. “Are you going somewhere?”
Rias looked incredulous.
“Of course not!” she said. “But I’m a devil… and you're human! You’re going to get old and gray and die, and I’m still going to look the same!”
Harry took a deep breath. He could throw off the Imperius curse, he reminded himself, so he REALLY should be able to keep from laughing.
“You’re trying not to laugh!” Rias accused. “I knew you wouldn’t take this seriously!”
“It’s not that!” he said. “It’s just, Rias, I’ve got something I’ve been meaning to tell you. I was wondering the best way to do it because I wanted the mood to be right, and then I find out you’ve been worrying about this… Let me tell a story really quickly. It all starts with three magical objects called the Hallows.”
He summarized the story of the three brothers who met Death and the prizes they each wished for. He then talked about his own past, mentioning how after so many years, he was the first person to unite the items.”
“I broke the wand because I didn’t want it,” he said. “And the stone was more of a curse than a blessing, so I left that behind in the forest. I thought that was the end of everything. But it wasn’t. I’d already become their master, whether I wanted that or not. Recently, strange things have been happening.”
“Strange how?” Rias asked.
“Well, I went and visited some of my friends a week ago,” Harry said. “It was just my best mate’s thirtieth birthday, and his hair is starting to recede. That’s just bad luck having it happen this early, but he gets it from his dad… It’s not just the hair, anyway. He’s got age lines on his face, and so does his wife. But me? Do you remember what I looked like when we met?”
“This,” Rias said.
“EXACTLY like this,” Harry said. “It took my a while to notice, but Rias… I’m not aging.”
“You mean…?” Rias said.
Harry scooped her up, lifting her out of her chair and squeezing her body to his.
“I mean that I’ll be around much longer than a normal human,” Harry said. “It would be a curse if I hadn’t met you. But now, I know so many devils to keep me company, I couldn’t be happier about living for hundreds of years, or maybe even more.”
Rias was trying not to look too excited.
“But what about Fleur?” she said.
“You’ve still got evil pieces, right?” Harry said. “She’s a powerful witch herself. She’d make a very good bishop.”
“Rook!” Fleur’s voices shouted from the next room. “I want me durability, Mon Amor?”
Harry rolled his eyes, smiling.
“The point is, we can be together,” Harry said. “We can do everything we’d want to. We can see the world, explore the wonders of magic, start a family…”
At the last one, Rias visibly gulped. Harry leaned in with a smirk.
“Did that one get you excited?” he asked.
“A little,” Rias said.
“It’ll be hard,” Harry reminded her. “Devils have those awful fertility rates. Really it would be irresponsible if we didn’t get started right away to make our dreams a reality.”
Rias shuddered, promptly kissing him.
Harry carried her to the chair she had been sitting in. He swiped away the book she had been reading, clearing space to set her down. Still kissing, Harry moved his arms behind her and unzipped her dress. In typically lude devil fashion, when her dress fell away Rias was totally nude.
“You were hoping for this, weren’t you?” Harry asked. “Dirty girl.”
Rias shivered again. “Take that back,” she moaned.
“Why? When you’re walking around with these bouncing everywhere.”
He grabbed her nipples between his fingers, rolling them and pulling Rias’s breasts. She moaned, fingering her pussy as she felt his touch. Right when she reached the heights of her pleasure, Harry said, “You know, these are even softer than your mother’s.”
With a human girl, revealing you banged their mother would be a way to immediately ruin a relationship. But devils weren’t human. They absolutely adored depravity in nearly all forms. Even a fairly benevolent devil like Rias had kinks, and imagining her fit young husband absolutely toying with her milf mother was one of those.
Rias hurled her head back, cumming from her masturbation.
“Get my clothes off,” Harry commanded her before she’d even finished squirting on the chair.
Rias jumped up, almost losing her balance because of her shaky legs, but managed to stay upright and pull at Harry’s clothes. She worked quickly as she lifted off his shirt and unbuttoned his pants. When she turned around to set down his clothes in a neat stack, she bent over, stretching her pussy, and Harry shoved his dick into it.
“Oh!” Rias exclaimed.
She was still bending down to place the clothes down. Harry’s forceful thrusts gave her no time to straighten again, so she stayed like that, her feet and her hands both on the floor as her back was arched.
Harry spanked her ass, watching it jiggle.
“This is what I love about devils,” he said. “You sluts can handle anything I throw at you.”
He pounded Rias’s ass with his palms, making it wobble like the surface of the ocean during a storm. He even managed to turn her skin red despite her superhuman high class devil durability. The stinging sensation certainly translated. Rias's moans were high pitched; she only made these sounds when she was in a masochistic mood. Harry had fucked her enough times to know this.
After giving enough slaps, Harry grabbed her pink stinging skin, squeezing until he had a firm grip.
“It’s so good!” Rias moaned. “I love you!”
Rather than tell her that he loved her too, Harry decided to show her.
He dragged her ass back again his body and emptied his balls in her depths. At the same time, he cast a spell wandlessly. Most wizards of a certain age knew contraceptive charms, but fertility charms were less used. Harry didn’t know which would win—his magic or devil biology—but it didn’t hurt to try if Rias wanted a child. Besides, at worst, they would just have to try again.
Over, and over, and over, and over, and over…
Harry grabbed her hips, spinning her around and lifting her, his dick still inside of her. Rias’s face was flushed.
“You cast a spell on me,” she said.
“I did,” Harry said. “It’ll be active for the next eight hours. Let’s make the most of it, alright?”
Rias swallowed, feeling Harry starting to bounce her along his length.
“Make the most of it how?” she moaned.
Harry leaned in close.
“By filling you with my cum as many times as possible, until you can’t help but leak the excess,” he said pleasantly.
Rias hurled her head back, orgasming at the mental image, while Harry continued to fuck her.
Maybe they should have marriage problems more often, Harry decided, if this was how they made up after…
