Katsubou Animajemera
Omega wa Pink no Yume wo Miru
Ijiwaru na Tsukai no Netsu ni Oborete
Read up to chapter 6 and it's not completed why left it hanging, the omega must be pregnant right now. Akito Kisaragi is a prostitute trying to survive in a world where omegas like himself are considered the lowest rung on the ladder of society. Abandoned by his mother at an early age and forced to use his body to earn his living, Akito didn't think his life could get much worse - until he is drugged and kidnapped by human traffickers. Sold at an auction for an exuberant amount of money, Akito falls into the hands of a wealthy alpha named Reiji Asahina. Reiji tells Akito he purchased him due to the Kisaragi family's well-known high fertility rate, and only wants one thing from him: to give birth to his child!
Kamiato Kara, Hatsukoi
Chapter 1-7 : Shiina x Rika (Alpha x Omega) It tells about the dark side of omegaverse who omega's life is doesn't always be happy. Rika was framed his classmate and get raped and bite by an alpha. He blaming himself as omega and he pretend to be alpha after that, but his pheromone can't lie. And he meet Shiina, alpha who bite him in the past. Actually Shiina was caught by the situation, he's being framed too and can't resist Rika's pheromones at that time. Chapter 8-ongoing : Shougo x Mei x Masa (all Alphas) Continuing story of Rika's friend. This one is cuteee lots of Mei's chibi! Shougo is Mei's childhood friend, he topped Mei. Masa resembles Mei's first love, willing to bottom for Mei.
Kiss wa Tsugai ni Hizamazuku
In a world where fated pairs are deemed to be a mere legend, Iori still dreams of finding his destined omega. But when he finally crosses paths with him, it turns out the one he's been longing for is the school's famous "alpha devourer", Leo, who wants absolutely nothing to do with him. Nevertheless, Iori has no intention of giving up. Is this feeling love, fate, or instinct...? The omega backstory is so sad
Haga-kun wa Kamaretai
This is so cuteeeee and funnehhhhhh. A badass chaotic omega with craaaazy teeth fetish (wore it as necklace) and a sexy alpha warden, with perfect teeth? The warden seme is so friggin hot without the mask kyaaaa >< Namikawa's teeth is in danger tho lmaooo also Yamada is just so tired of his tooth-idiot friend.
Last Omegaverse
The last omega and alpha left in the world.
Shounen No Kyoukai