Yareru Monnara Haramasete Miyagare - Yankee x Omegaverse
Antimoral Omegaverse
moment he met Kouki, the son of his mother's new husband, Kei knew he had met his fated pair, as if were a prank from God. While trying to deny this fact, Kei must fight his omega instincts when he and his stepbrother Kouki, now an alpha, must spend time alone together. Kouki who has reached puberty has his alpha instincts awakened by his omega older stepbrother. Two people driven by desire, will they be able to stop each other and fight their instincts?
Kimi to Tsugai ni Narenai Riyuu
There was never a time when they didn't like each other - Minato (Omega) and Jin (Alpha) have sworn to each other to become a "pair". However, when Minato was supposed to go into heat, the doctor reveals to him that the chance of him getting pregnant are close to zero... Minato is shocked that is seems like he's unable to bear a child! After all of this he separates from Jin and they drift apart... This Manga contains 15 years of love between an Alpha who has made a promise to mate, and his childhood Omega friend who's somehow infertile.
Alpha no Ie no Ko
I Found You, My Omega
From YahmeeTeeh Scans: Daiki was a smart kid but on the day of their examination blood test to be performed and identify their gender, it turns out that he wasn't an Alpha but an Omega. Daiki was bullied as a child and became gloomy. In front of Daiki, he was weighed down by the gender gap and suddenly appears a High-Spec Alpha (Takizawa) who said he used to be Daiki's classmates. Daiki doesn't remember him at all and somehow he is wary of Takizawa's advancement of wanted to be paired of him. An Alpha united by obsession and a High-Spec, on the other hand an smart but grim Omega
Katsuyoku Scandal
The Omega Takes a Husband
Kiss Me, Liar - Special Episodes
Unmei Sugite Tsugaemasen
Nagina, an Omega, finds himself in a dramatic reunion with his Alpha ex-boyfriend and ‘fated pair’, Sora, when he moves into a new house. Nagina has repeatedly gone out with Sora and broken up with him. He has dumped him right before they have sex. Thanks to that, Sora seems to bear a grudge against him to the point that he’s even planning to take revenge. But it seems like Nagina has a deeper reason that prevents him from becoming Sora’s pair...
Kozure Omega to Boukun Yakuza