Remnant: Beastmen Omegaverse

In a world inhabited by both humans and beastmen, Kai is a young human who has been abandoned by his parents for being born an omega. Luckily, he is taken in by Luard, a wolf beastman and the head of the prestigious Siegfried family. Within the walls of his new home, Kai learns that in order for beastmen to have children, they must mate with a human omega. He dreams of one day becoming Luard’s official mate, yet as he matures and waits for his first heat cycle to arrive, Kai finds Luard increasingly distant. The young omega can’t help but wonder—what is his purpose if not to bond with the alpha he loves? (Source: Seven Seas Entertainment)

For the sake of my love, we are bond as a fake mate. Beryl, an Omega who has lost his mate and is in debt, decides to have an arranged marriage with a noble Alpha in order to protect his memorable home. However, the beautiful beastman Shia shows up and sets a condition for Beryl to become his mate. He must join the same academy with him, become his servant, and... to be physically compatible with him. Even though Shia twists Beryl's world around with his arrogant attitude, but he too has his own reasons for being Beryl's mate... (Source: Frontier Works, translated)

The Müllers were a respected family who educated omegas before sending them to harems where they were to give birth to noble beast children. As an omega born in the Müller family, Jill could not accept his own destiny. He who was unable to behave like other omegas, got ignored by his own family. Then they kicked him out by setting him up with Albert, a noble alpha beast and Jill's childhood friend. Although he could not change his destiny as an omega, Jill promised himself that he would be happy even after marrying Albert. However, one day, another alpha beast visited the Müller family. His name was Diego, third son of the Siegfried family, the most respected noble family in the country. He came to take Jill, the rebel from Müller family, into his harem. Of course Jill rebelled against Diego's arrogance, but who knew what destiny would bring? (Source: Frontier Works, translated)

A spin-off of Remnant: Jujin Omegaverse about Juda and Daath raising their kids, Hugo and Shaia. The trickster twins take the center stage.