
It's not easy to find partners for omegas and alphas. Omega Akihiro's family know this, and so they also know how lucky they are to be able to arrange a marriage for him with Reiya. He's an alpha, he lives nearby, he's the same age as Akihiro, and he's apparently a wonderful person.
Although their arrangement is initially one that neither of the boys are interested in, feelings change once they see other sides of each other.
(Source: MU)

It was really nice that he wanted to be a doctor but damn, all the time and studying plus costs. It'll be rough. He'll be so busy with stuff too
Another thing, please don't suddenly come out or even if you do, talk about it with your partner...I'm thinking too much about it. It's literally just manga
You should know that it's a "joke" comic. It was made as a "comedy" and if you didn't laugh, congrats. You're probably still sane but also scarred rn