AN: First NSFW ever and it’s in the omegaverse, technically this is a hermaphrodite universe, which is a sub-sub genre of the wider omegaverse.
This features a female Zoro who is called Koro, the meaning and origin of her name is bellow. Koro still looks like normal zoro with short hair and scares.
TW: there is a small line about abortion.
Summary: Sanji had never help alpha during their rut, at lest not a male alpha, before joining the Straw Hats. However, he would assisted their swordswoman because that was just his nature, even though neither had romantic feelings for each other.
Or-Omega Sanji helping a female Alpha Zoro through her rut. Set after Wano.
________Story_______________
Sanji rarely, if ever, felt like prey; however, the look that Roronoa Koro gave him made it clear that he was her target. They weren't bonded as mates; at best, they were rivals with benefits or partners during heat and rut, as the only Alpha and Omega in the Straw Hat Pirates.
Betas could be helpful, but it was often more effective to seek an alpha or an omega, as Chopper had suggested. Before they got the reindeer, they had to rely on other methods to navigate heat or rut, and they were fortunate that they did not end up with a baby, considering their lives were filled with extreme risks.
Neither of them really wanted a child to begin with. Sanji in particular was hesitant about becoming a parent. He was concerned about the changes his body underwent after using the raid suit, which could affect his ability to have children. Since he was a quadruplet, he could have multiple babies in a single pregnancy, and he worried he might have to play favorites among them. As for Koro, she had little to no memory of her parents, only the dojo master as a parental figure. This lack of memories made her fearful of becoming a parent herself, worried about potentially leaving a child behind at too young an age for them to remember her.
Sanji swallowed nervously as he looked down at the green-haired woman who had him pinned against the wall in the closed-off, soundproof room on the Sunny. This space was rarely used, as a male omega and a female alpha's reproductive cycles didn't occur as often as their counterparts. Typically, it happened only three times a year, but not at the same time. Sanji had already gone through his heat after being rescued from Whole Cake Island, while Koro, after they left Wano, was now entering her rut. "I'm guessing you're unhappy about Luffy and Nami helping me, huh, Mossy?" Sanji asked.
The response he received was a low growl: "What do you think, curly brow?" Alphas were territorial, and anyone who dared to interfere with what they claimed typically faced severe consequences. Fortunately, the captain and navigator escaped with only minor repercussions. "Stupid timing," she muttered, her voice barely above a whisper.
Sanji shook his head as he lovingly petted Koro. People often viewed Omegas as providers of food and childcare and, for some, in sexual relationships. The food aspect was Sanji's favorite, followed by the sexual aspect, although he was more inclined to engage with female omegas and betas, and certainly not with males of any gender.
Female alphas presented a more complicated situation. On one hand, they were women whom Sanji would never harm; on the other hand, they could be pretty brutal, often behaving in ways typical of males. It didn't help that Koro was attractive; he wondered if it was simply because she was female, or if he truly found her appealing.
"Chopper prepared my medicine this morning. Thankfully, he made it a pill instead of a shot this time. I don't think I can handle a shot ever again." Koro was talking to herself, a habit she often had while in a rut. Given the size of the needle used on her by the Mink doctors, it was understandable that Koro would develop a dislike for anything pointy, except for swords. "Did you take yours, Curly?"
"Naturally, I was the first to try the pill version." Sanji knew his pill should prevent pregnancy. However, because of his modifications, he wasn't sure whether it would increase or decrease that chance, so he wouldn't take any risks. Chopper would need to prepare abortion medication just in case. The other pills were designed for both Alphas and Omegas who go into rut or heat. These medications helped them to think clearly, as those in rut or heat focus solely on eating, sleeping, and sex.
"You won't be so smug after I'm done with you. Do you really think you can take me on now, big boy?" Koro pulled Sanji from the wall and set him down on the king-sized bed framed with Adam wood. It and a chest of drawers were the only furniture in the room. "I can assure you that my strength isn't the only thing that has grown larger after my training." She removed her robe.
Sanji's brain froze at that, and must have started bleeding as Koro growled before grabbing his nose.
"The only way you're going to pass out, Cook, is from pleasure, not blood loss," came the threatening remark as Koro removed Sanji's clothes, leaving him in just his boxers. "It makes me wonder what would happen if I tried using my asura form. Do you think it comes with additional… assets?" The Alpha smirked widely.
At the very thought, Sanji was on the verge of combusting and could practically visualize it occurring before his eyes. One in his anus, another in his vagina, and the last one rubbing against his own penis while Koro thrusts into him. "It would be best if we waited to find that out."
"Spoilsport," Koro pouted as she pulled off her pants, tossing them carelessly somewhere in the room along with the rest of their clothes. The only thing left covering her was her undergarments. She had considered using that form but respected Sanji's decision. "Will that be during your next heat or my next rut?"
"My heat." It was best to try then, as his body would be more receptive to such things. Sanji leaned up to kiss Koro, eliciting a growl-like purr from the Alpha, who swiftly took control of the kiss. They continued for a while before they had to part for air. Afterward, Koro began to playfully nibble and kiss Sanji's neck, keeping clear of his scent gland, as that was reserved for a time when they might decide to bond, though that seemed unlikely.
Koro lowered herself toward the Omega's chest, and then she took his left nipple in her mouth before beginning to suck on it. Hearing his moan and knowing she was the only person who could get the blonde to be vocal during sex prompted a smug smirk to spread across her face. Switching her focus, Koro gave the other nipple similar attention. At the same time, her hand moved lower, eventually reaching his stomach and rubbing the area, her mind filled with images of how his belly would appear, rounded and swollen with a baby.
"You're taking your time, Mossy." Sanji teased but regretted it as Koro grabbed his member, which was now quite hard.
"You're the one who always tells me not to rush, so do us both a favor and either moan or, if you prefer, beg," Koro growled, irritated. "We haven't done this in over two years, so I want to ensure it's as painless as possible." Just because it was easier for Alphas and Omegas to be intimate didn't mean it was any less painful.
Sanji could only respond with a nod before letting out a yelp as Koro then pulled his boxers off, and the sudden cold air made contact with his penis and vagina. Compared to other male Omegas, he was larger, and his size was similar to a beta. A moan escaped Sanji's lips when the Alpha placed his manhood into her mouth and sucked on it with intensity. Given the significant force that Koro bites down on Wado Ichimonji, it's reasonable to assume it would be painful, yet it wasn't. The stimulation level only intensified when Koro inserted her finger and started the rhythmic pumping. "You are cruel, Moss."
Koro removed Sanji's limb from her mouth, but did not withdraw her finger. "Not cruel, Curly, merciless." To prove that, she spread her fingers while still pushing in and out, searching for the right spot, and even went back to sucking Sanji off.
Sanji's head crashed back against the pillow, and at that moment, he produced the loudest moan he had uttered so far. He silently agreed as Koro's merciless misdirections brought him to a climax. As she found and rubbed his prostate, he whimpered softly. "Cum-cuming." It was all the warning he could give before cuming.
With enthusiasm, Koro drank Sanji's semen as if it were her preferred sake, even taking the time to savor it by licking her lips as if it were a delicious beverage. She removed her sports bra and shorts, which she wore as underwear. "That was a good appetizer, Cook. I'm ready for the main course."
Sanji wasn't sure if he could respond as he felt aroused again, using his position in the crew to spice up the conversation; it always turned him on. He opened his eyes to observe Koro's body; unless you knew she was an Alpha, you might mistake her physique for a Beta. Her breasts were ample, still smaller than a few female Omegas he had encountered, but had definitely grown over the past two years. Sanji hesitated to look further down, but his curiosity got the better of him. No matter how many times he had seen it, he could never fully comprehend how a female Alpha's reproductive system worked. The phallus-like clitoris had descended to its full length. There was a knot, but it wasn't as prominent as a male Alpha's.
Koro pinned Sanji's legs near his head, causing him to grunt because of the position, even though he was not in pain, because his fighting style granted him impressive flexibility. With a downward movement of her hand, Koro started self-stimulation with two strokes before aligning herself with Sanji's vaginal opening, and, after a brief rubbing of the slightly curved tip just inside the entrance, she inserted herself inside.
Sanji couldn't help the wine he let out; it wasn't because of pain, but a combination of not having penetrated sex for two years and the girth of the shaft that was being pushed into his body. Koro leaned forward to nuzzle his cheek, pausing briefly for a few seconds at about the midpoint before proceeding until she pressed her hips against Sanji.
Both of them panted as they waited for Sanji to adjust. Koro pulled out until only the tip was inside before slamming back hard. This was her preferred pace—slow, but powerful. Sanji let out small whimpers every time Koro thrust deeply. "Good Omega, do you like how I feel? How deep I go?" Koro whispered in the Omega's ear, her voice barely audible over the sound of their bodies meeting and the jingling of her earrings. "Even if I can't get you pregnant, that doesn't mean I can't make you look like you are."
Sanji knew the Alpha wasn't joking about filling him up; she had done it before and looked pleased afterward. He put his legs around Koro's waist, pulling her close and deeper. While sucking on her breast, he experienced a deep thrust that stimulated his sweet spot, leading to a groan and a second climax, prompting him to clamp down.
With determination, Koro intensified her thrusts, growling at the tighter opening as she aimed to insert her enlarged knot into Sanji. With each passing moment, it got caught in his hole, barely pulling out before being pushed back inside.
"Alpha, put your knot in me; it will help you," Sanji whispered as gently as he could between gasps of breath and letting go of the breast he was suckling. The release of pheromones during climax frequently induced sleepiness, effectively suppressing the desire for sexual activity for a minimum of sixty minutes.
With an animalistic snarl, Koro slammed her knot into place, thrusting it a few more times before it expanded fully to lock them together. A shiver went through Sanji's body as he felt the cum entering him, perhaps even reaching his womb. After blinking slightly, Koro carefully positioned them so that they would lie down and wait for the swelling of her knot to subside.
"Looks like I didn't pass out, Mossy." Sanji felt proud that he was still awake.
"You seem to have misunderstood something, Cook. All I meant was that I didn't want you to pass out from losing too much blood." Koro pulled the blond closer until their noses were almost touching. "And that was just the first round."
*Koro's name comes from Saikoro, which means dice, to keep with the gambling theme of Zoro's relatives' names.
*The Roronoa family has a tradition of naming the newest generation after the grandparents, but that doesn't always happen. Zoro's name fits because the end of his grandfather's name is the same as his- Headcanon.
* Koro can still work as it is one letter off from Zoro. It can also come from Furiko and Pinzoro by using the last two syllables of their names.
* Within the Shimotsuki family, most members are born as female Alphas and male Omegas, with betas being rare, despite Ryuma being a beta himself-Headcanon.
Female Alphs can still become pregnant; it is just hard, and they have to be monitored through the whole time. Male Omegas can impregnate any female, but their fertility is really low. Technically, making female alphas and male omegas hermaphrodites, like slugs.
If anyone wants to make art from this go ahead but also cantact me to let me know you are.
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