Shounen No Kyoukai
Kaoru (alpha), Yuka (omega), Taiga (alpha), Rin (omega) Kaoru x Yuka - childhood friends, a couple (but not the fated couple) Taiga x Rin - just sex bodies Taiga's fated pair is Yuka and Kaoru's fated pair is Rin... Story: It's messed up at the beginning. It starts in a high school. They had a physical exam where they find out the second gender of the students. Yuka turns out to be an omega and his childhood friend Kaoru turns out to be an alpha. Yuka's buddies are mostly Betas but one of them, Taiga, is also an alpha. Taiga went into really bad rut and it affected other alphas too. Taiga tried to rape Yuka but Kaoru took his place and made a pair with Yuka. In the end Taiga finds out that omegas smell the same except the omega he's supposed to be in a fated pair with an alpha. At that moment he realises that Yuka is his fated omega but he doesn't go for it cause he has remorse of conscience. As an adult Taiga goes out with a younger omega dude Rin. But they are not a pair. One day Rin and Yuka meet at the hospital. Rin gives him some tickets to the restaurant he works at. Yuka goes there with Kaoru and Kaoru goes into rut. Turns out that Kaoru's fated pair is Rin. Now they are in this mess where Kaoru is in a pair with Yuka. Kaoru knows now that Yuka isn't his fated pair but he still doesn't want to leave Yuka cause they are childhood friends. Yuka got 2 and 2 together and knows that Taiga is his fated pair and Rin is Kaoru's fated pair. Taiga knew about his fated pair being Yuka all along and Rin is trying to get Kaoru. In the end Taiga bit Rin's neck - making them pair. So everything works out in the end - even though they're not fated pairs. Think I've read ch. 12. 5
Katsubou Animajemera
An alpha has a trauma. When he was young he raped a male omega once. He remembered only the act but not the person or how he exactly got to him - just the fact he raped him. He went looking for him the next day but the omega wasn't there. So now he lives with the guilt. He's an university student now. His senpai invites him for a dinner. Turns out he send him to a male omega brothel. the main alpha meets a male omega there. This omega has some muscles - not skinny as ususal omegas. They end up having sex. + It seems that they're the faited pair. But the omega might be the guy whom the alpha raped long ago - it seems like it now and it was confirmed in the end of ch. 3.
Love Shuttle
OK! This is kinda funny and scary at the same time. Anyway, There is an omega who is a late-bloomer... like really REALLY late-bloomer. He got into his first heat as an adult. + He looks like an alpha and is stronger than average alpha. But one day he goes into heat cause he thinks about an alpha dude in his job - how he hates him. Well one day he forgot to take his new meds (he got medication for his heat recently - they're weak, basically for teens - for beginners) and got into heat on a afterwork party, where this alpha male was. They ended up at a hotel having sex. The next day at work the omega goes into heat again and the end up having sex in a storage room. The omega goes all horny like during his heat so he acts like a slut towards that alpha. In chapter 6 - 7 however he "wakes up" in the middle of the sex and he actually enjoys it (in the end). But he's a tsundere so the 1st thing he did, right after alpha kissed him after sex, was that he punched him in the face. Now the omega went to the doctor again. In the chapter 8 the omega figures out that he goes into heat because the aplha so he starts to panic. He met with the other omega at his work to consult this issue but the other omega called the alpha so he can scram. But the main omega had different plans and demanded that he stays. So in the chapter 9 they're just sitting there and talking/screaming then the not main omega tries to help by asking some guestions. Unfortunately the main omega is a tsundere and basicaly says that he has an alpha which pisses off the main alpha. So the main alpha starts to ooze some pheromones (cause he's pissed) and the main omega goes into heat right then And there. In the chapter 10 they end up having sex again. The omega confessed to the alpha during his heat so the alpha doesn't know if the omega's feelings are real. So in the ch. 11 he made him promise (during sex) to not run away anymore. But then (ch. 12) the omega panicked again and tried to leave but got into heat again. But he said to the alpha to call his doctor. So the doctor came (ch. 13 I think) and gave him some meds. Afterwards the doc talks with the alpha about the omega. Anyway early on the omega goes with the doctor to his mothers house (ch. 14) where the doctor finds out that the omega has an older brother that looks exactly like the alpha! And them the doc spilled the beans in ch. 15 so the omega pulled out some bull*s about being in love so he wouldn't have to come back home. The alpha agreed to play his role in the end but the omega's mother figured it out anyway (wasn't angry). And after that they had sex - without pheromones involved. But in ch.22 a new alpha appeared at their job and the omega can sense this guy's pheromones too (which makes him only the 2nd alpha with pheromones he can smell... which isn't true anymore cause in ch. 23 he starts to feel other alpha's pheromones as a normal omega.) Anyway in ch. 23 the omega's brother (older and alpha with the brother complex) shows up in front of his little brother apartment building. He meets the omega's doctor there who infroms him, in ch. 24, that he can meet the omega's alpha since he's with the omega at that moment. So they went to the apartment. The alpha brother saw his little omega brother sleeping on the alpha, said almost nothing and left - together with the doctor. The doc gave him a ride. Oh BTW the doc is an alpha who sleeps with other alphas and now he's interested in this alpha brother. Now the main alpha and omega are living together - as treatment for the omega - the doc said that the alpha was a good influence on the omega's physique. And they Went through the alpha's rut together - the end of season 1 (ch. 36) Since ch. 37 It's about the omega's Brother alpha and the omega's doctor, also alpha (the doc is into alphas). The doc is really interested about the brother Alpha so he messes with him. At some point it got Back to the main couple. They end up married in the saeson 3. Read ch. 95 (ch. 90 - that's the end? Really?) Ch. 61 Is the end of season 2. Ch. 36 Is the end of season 1. Raws: https://silverblossombells.dreamwidth.org/
Seku Tsuga
An omega is a male slut. He also have lots od customers. One aplha ends as his mate. The alpha tries to work the relationship up. They end up together. The Story Is... Meh... Read 6.5 Ch. 2 page 19 and 20 - not loading
Omae no Koi wa Ore no Mono
Both have muscles. A captain of a judo club Is the omega And a captain of a karate club Is the alpha. Their relationship starts as friendly Rivals but they end up as a couple.
Kanraku Alpha ~Enigma~ 4 verse
Well well well. Another omegaverse but here are 4 second genders, not just 3. there are Alphas, Betas, Omegas and Enigmas. Enigmas are super rare - even more rare than Omegas. And Enigmas tops even Alphas it seems - they may be even able to impregnate them (basically they have the "power" to make Omegas from Alphas maybe even Alphas from Omegas - like... to switch thei gender). The story: It starts with a rape in ch. 1 right after some basic introduction of characters is done.
Kurui Naku no wa Boku no Ban Beta
Toshi no Sa x Omegaverse BL
A dude is an uke. He was a plaything for an alpha. This alpha had a harem - he bit lots of omegas and played with them. He eventually got bored with them so he throw them out and replaced them. He's popular (an idol or an actor). He throws away even his children. The mentioned uke took one of these kids with him and raised him (the kids's name is Neon). Neon is now 15 and an alpha. On his 16th birthday he had sex with his step father (the uke). Read ch. 1
Sayonara Alpha
A high school student falls for a middle schooler. This high school student looks And behaves as an alpha but he's an omega. The Kid Is his fated alpha. They end up together after 11 years and finally were able to be intimate. Read ch. 5.6
Hanagara Tsumi