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)