Osozaki no Omega

It's an era where medicine hasn't progressed as much and medical tests for the alpha, beta and omega genders aren't precise. Secondary genders could only be confirmed once the distinct characteristics begin to manifest. And since heat suppressors were not only expensive but also difficult to acquire, most omegas usually had no choice but to survive by becoming playthings -male prostitutes or sex toys for alphas.

In such an era, after his parents had died, Yorinosuke, a beta, was taken in by his uncle who runs both a cafe and a brothel, and he now works as a cook at his uncle's cafe. Touya is an alpha and the son of a tailor who is acquainted with Yorinosuke's uncle and he secretly has feelings for Yorinosuke. But considering their circumstances as alpha and beta, Touya didn't wish for them to become anything more and the two continue to be friends.

Time passed by and one day, after Yorinosuke had turned 24, he felt himself being drawn towards Touya and when the latter stared at him, it triggered him into a heat like an omega's...!?

The curtain now rises on this omegaverse Taisho romance between an alpha and an omega male prostitute!