Chapter Text
Good breeding, it was said, started with a good foundation. Only once it was established that an omega would be the perfect candidate to lead their family to prosper in the future could the perfect alpha be selected for them.
Charles Xavier was exactly the sort of Head Omega who could manage to fuck it up with something as stupid as getting trapped in a suite with his sister's intended while in heat during their vacation. It wasn't really their fault that things had ended up that way, seeing as Erik had come back to the Omega's suite to grab Raven's suntan lotion after being assured that Charles had his own room and a wonderful tub to soak in. Neither of them expected that the automatic lock would malfunction in the middle of Erik trying to escape once he realized that Charles was in the tub projecting his plans to masturbate afterwards freely in the one space where he didn't have to worry about the outside listening in. Damn the hotel and their precautions against psionics and their anti-alpha locks. Raven had let him in without trouble, but getting out was something else entirely.
Erik wondered who's brilliant idea it was to make it so that no one could get out of the rooms unless they were an omega. Maybe it was a precaution so that the omegas in a room could take down any alpha who'd managed to get in until authorities arrived. They were taught how to fend off attackers in schools these days, and with mutants becoming more prevalent it could have also been mutant proofed for paranoid human omegas. He could try using the phone since breaking the lock would be risky and leave Charles exposed, for as much as Erik despised most of the rest of Raven's family, Charles was different. He had all the gentleness, patience, and authority society valued in a Head Omega, a man who's alpha would probably be listened to very carefully with the freedom to better themselves once married. Although Erik thought he would do better were he on his side of the mutant versus human argument, he did make great points when they decided to engage in debate. Once he was married to Raven, there would be nothing keeping him from speaking to the head of his new family to try and coax him into listening to reason, but for now they were supposed to be monitored.
Charles let out a low moan, sending shivers down Erik's spine and a rush of blood to his cock. His own scent spiked in response, then there was a splash from the bathroom.
Erik needed to be out of there ages ago. He couldn't stay, not with Charles already aware that he was in his room when he wasn't supposed to be. Maybe he could ask to use the phone or be let out so he could get back to Raven. He knew Charles to be logical, and although alpha culture fantasized about omegas who begged and seduced them into bed out of wedlock, that usually wasn't the case. Charles would let them out, never speak a word of this to Raven aside from maybe a form of chastisement, and they'd both forget the embarrassing slip-up. Everything would turn out fine, he believed, until Charles emerged from the bathroom in a cloud of rose scented steam and his own musk. Every Omega Venus painting ever produced would be thrown out were anyone else to have witnessed the glory that was Charles Xavier in that moment.
From the delicate sway of his hips to the curl of his damp hair, Charles was a vision. His arms were stretched above his head, droplets of water rolling down his freckled shoulders and into his navel or into the dark curls at the base of his cock. Erik's nostrils flared, a low predatory growl sticking in his throat. With a flutter of his lashes and a press of teeth on his plump lower lip, Charles glanced up at him.
"Hello, Erik. I thought you were at the beach with my sister and her friend."
"I was. She let me into what I assumed was her room to get her lotion." Cautiously, he offered the bottle in his hand. "I have it now, but I can't seem to get out. Omega locks. Could you...?" Charles chuckled and passed by him, leaving Erik frozen and hard where he stood with a good view of his ass. Erik was certain that the stream dripping down his leg wasn't water. His throat went dry as Charles tapped away at the lock.
"OMEGA IN HEAT DETECTED. ACCESS DENIED."
"No," Erik gasped. "Try again."
"It's not going to let me do it, Erik. You know that as well as I do." Charles was steadily growing hard, thumbing at the head of his erection as he worried his lower lip with his teeth again.
"Try." Once again, Charles tried to open the lock, the same message refusing to let him out.
"See? It doesn't work. I can try calling Raven for you, but-oh!" He huffed and thrust into his hand again, swaying from side to side. "I-it might take her awhile to get here. Why didn't she just buy some more?"
"Something about her scales flaking without this special formula." Erik tried to hold his breath as best as he could, knowing that the longer they spent together increased the risk of something bad happening. Charles was already getting to the point in his heat spike where he wanted to be filled, and if they could get it an omega preferred to have a real knot over silicone. It was bad enough that they got along so well and that they were both probably the most fertile alpha and omega either had ever met, but Erik wasn't Head Omega material. He was brash with a tendency for violence and unwilling to submit to authority. Raven was much the same, but Charles...were Erik to be with him, he might ruin everything for the future of the Xavier family.
"Ah." It was sighed out, Charles reaching under himself to try and stuff a couple of fingers into himself to spare Erik from smelling just how wet he was. It didn't help that he just had to start pushing and pulling them in and out to relieve himself. Erik's erection strained to contain itself in his swim shorts, and his usual mental shields were soon entirely shot with the smile Charles gave him. "So she trusted her alpha to resist her omega brother on heat. You're such a good man, Erik. She'ssss lucky to, uh, have you and your wonderfully large cock. How big did you say your knot was?" Charles was closing in on him, his slippery fingers now out of his ass as he cupped Erik's face with his hand.
"I didn't, but if you'd like to see I wouldn't mind showing you. For science, that is."
"Lucky me." The fingers slipped into Erik's mouth as his free hand pushed down the elastic band of his shorts. He broke into giddy laughter when Erik's cock practically jumped out at him. "Marvelous. Why Erik, I think this is the most exquisite alpha cock I've ever laid my eyes on."
"Is it?" He watched Charles lick his lips and nod frantically as his pupils dilated. It was probably time to get Charles to bed, he decided, tacking on "and get out" to the end of his thought before Charles took it as an invitation. Then again, it couldn't hurt to have just one more taste before he left. Raven would know then and get rid of him, then no one would ever risk Erik becoming a problem to the family and he'd get to have a little part of Charles that he was never going to experience otherwise.
"Yes. I think I have just the perfect place to put it, actually. Well, two if I'm being honest, but I'm hoping you could keep that other hole occupied with your tongue. I've always admired how good you are with it when we talk, you know, so I'm curious to see if it's as clever elsewhere. I assure you that mine is if you're wondering." Warm, sensitive flesh met somewhere in the middle as Charles closed the distance between them and clasped at the collar of Erik's polo. "But science dictates you perform an experiment to prove a hypothesis, right? Why don't you help me prove mine, hmm?" He eased Erik's hand to the cleft of his ass to allow long fingers to glide against slick muscle.
Once again, Erik growled, half embarrassed that he sounded exactly like the old omega cliche of primal alphas ready for a rut. Obviously, Charles was more turned on by the whole show than anything with the way he was rocking his length against Erik's and trying to sink back onto his fingers. Even his warm and bath flushed toes nudged at Erik to make a move, so when Erik finally surged forward to bring their mouths together all Charles could manage to respond with was a hungry whimper. They didn't even make it to the bed, instead pulling each other to the couch in front of the suite's large television. Charles wriggled out of Erik's grasp with a gleam of mischief in his gaze, promptly bending himself over the arm of the chair. It was a bad idea, the worst idea to ever cross either of their minds. Everyone would be pissed, and that was almost enough of a reason for Erik to leave.
It was just too bad that his libido disagreed and found the prospect of kneeling to lap into Charles's stretched and dripping ass was far more tempting than preserving their honor and commitments to the greater good. The greater good and the rest of the world could go to hell, Charles and Erik had better things to get up to and a womb to fill. Erik greedily licked the preparatory wetness away from the underside of Charles's cock, nipping at the light bulge of the swollen gland below it until Charles cried out. His vision started to tunnel on the seat of the couch, confusing him until he realized that he was experiencing what Charles was seeing and to some degree what he was feeling, his cock twitching at the sensation of a tongue on his balls.
"Would you like to sit on my face instead?"
"Please? That way I can just ride you afterwards and you can play with my nipples. You were staring earlier." With a swift movement, Charles climbed onto the couch and waited for Erik to lie down, the head of his cock settled against Erik's lips as it leaked. His hips arched into his face as Erik laved at the slit, thumbs teasing the peaks of his nipples before Erik reached up to take over. Erik's white polo was drenched in sweat and omega slick, but the friction of the fabric was enough to please Charles as he thrust into Erik's mouth and tugged his face closer. His smell was overwhelming, mingling with Erik's and the rose scent from his bath. When they were finished, he was sure that he was dragging Erik to the bath to clean up once again and then into his bed for a little more play before a nap in his arms. He was going to do so many things to and with Erik after this, and he wouldn't have to worry about getting into trouble for it. Something about the thought didn't sound right to either of them when Charles mentally voiced it, but the promise of being together sounded good enough of a reason to go on. Charles stopped grinding against Erik's chest and scooted away from his face reluctantly, giving him a glare of warning when his hands clamped around his hips to hold him still.
'Too many clothes. Take them off, then we'll continue. Until then, let me keep you motivated.' For extra encouragement, Charles leaned down to kiss Erik's cheek and reached back to stroke him. Erik struggled to get his clothing off while under Charles, groaning when the omega lowered himself down to grind back onto Erik's erection. He started to mentally count the time it took until Charles finally lifted himself up and sank down onto Erik's cock. It wasn't longer than four seconds.
Charles's first thought when he finally had a real alpha cock stuffed up his ass rather than a replica was that it was firmer, thicker, and mercifully warmer. He clenched against it, tensing when Erik rocked his hips upward. When the panic hit Erik's mind, he relaxed as quickly as he could and awaited Charles's instruction.
"...Erik?" There was a quick carding of fingers through hair and Charles started to ease himself up. "Erik, listen very carefully, my friend." He rose up until the head of Erik's cock was barely in, then pushed himself back down with a quiver of his powerful thighs. "When you start to feel like you're going to knot, I want you to...to..." The third thrust down was angled just so, rubbing pleasantly against the inner walls of Charles's body. Whatever his train of thought had been devolved into a mental jumble until it solely yearned for a repeat. He came back to it three more thrusts in when Erik's nails bit into his legs as he gripped. "W-when your knot starts to swell, I want you to let me know s-so we can, um, we can-shit!"
Erik had shifted to sit up quickly and carefully, the change in position momentarily driving him in deeper. He took the opportunity to roll his hips as he thrust a few times, then allowed Charles to reassume control as he latched his mouth onto a nipple. Arms looped around his neck to anchor Charles to him as they continued, one of the alpha's arms hooked around his waist as his hand stroked the omega's length. Damn the knot, Charles wanted it. A knot didn't mean he'd be impregnated for sure, especially this early in his heat, and if he was already taking the chance to scratch the itch he might as well do it right the first time. He laughed to himself as his hands clawed at Erik's shoulders, baring his throat for the alpha to suckle at. Definitely worth it, he thought, and clenched around Erik again before reaching to tug his face out of the hollow of his throat. Those teeth would definitely leave a mark. He laughed again, then pulled Erik's face to his for a kiss.
The pattern of thrusting, panting, biting, and kissing continued for a few minutes longer, only paused for a few careful seconds so that Charles could examine Erik's earlobe when he'd accidentally bitten down too hard. It ended up being fine, just something else for them to giggle over as their wild fucking mellowed to something softer. Erik had once again shifted them, lying Charles flat on his back so he could hook his legs around a slender waist. He angled himself yet again, the pressure building at the base of his cock as they awaited the knot. An alpha his age was only good for a few knottings a day during an omega's heat, but they'd be stuck together for at least seven minutes after he hit his climax. He could only guess that Charles would probably enjoy it based on the studies about omega orgasm frequency increasing during the knotting to decrease pain, if not for the rush of extra hormone than at least for the scientific aspect. It surprised him to be shushed.
"T-too loud." Charles tapped Erik's temple lightly. "I'll like it, I promise. Please, Erik, go ahead." Charles softly scattered kisses along Erik's jawline and neck, his eyes clamping closed as he clenched for the final time around him in ecstasy. His come spread itself between their stomachs, only interrupted by the swell of Erik's knot inside of him.
They trembled together with the first pulse of Erik's seed emptying into Charles, breathing heavily in unison until Erik was composed enough to shift them with Charles in his lap again. He dared a glance at the clock, trying to remember the reason that lead him in half an hour ago. When Charles whimpered into his neck, he dropped the thought to play with his hair and rub his back.
"It's fine," he murmured. Charles was overheated once again, his mind craving water and the next orgasm. Erik couldn't give him one without hurting him, but he did reach out his hand to get a metal cup filled with water and by his side for Charles. "Drink slowly." The omega, sleepy and pleased, eagerly drank the water he was offered while fondly blinking up at Erik from under his lashes. There was a purr of affection setting in Erik's chest that came from watching Charles shiver because of him in one moment and curl up next to him in another, the same kind that came from playing chess with him and getting into debates. Why hadn't he thought of doing this with Charles earlier? Surely there had to have been a reason, but his mind was drawing a blank and so was Charles's. After ten minutes and the removal of Erik's shrunken knot, they were still unsure but happy enough to go on without knowing what had previously barred them from trying. They hopped into the shower for a quick wash up and exchange of slow and sweet kisses, then buried themselves under the sheets blissfully with omega huddled against alpha, just the way it should have been. Erik and Charles fell asleep mutually assured that they had made the right decision.
Things went to hell when Raven came up to check on Erik after he'd been missing for over two hours and found him curled up in bed naked with her omega brother, either man smelling of the other and the smell of sex still lingering in the main room of the suite. Tagging along behind her was their appointed pair of chaperones, all three standing around the bed when the pair woke with varying degrees of shock, disgust, and disappointment on their faces. With clearer minds, the men could now remember why it had been such a bad idea for them to sleep together.
The only option for avoiding the scandal that arose from an unmarried alpha-omega pair sleeping together during the omega's heat was to marry, or else the omega would lose their respect for not sewing the best possible seed in their womb should they turn up pregnant. No omega would risk their children's future for a moment of passion, nor would they risk disgracing their family if they were anything like the Xavier's. As Raven cried on in the background, Charles turned to smile sadly at Erik's grim expression.
"Well, my friend, I know this isn't how you wanted to join the family, but I suppose it's the only option you have now. At least now we can put your name on the donations to the mutant schools."