Sagitter's manga / #Alpha to omega(2)

In which our mc is sold off to what is basically a prostitution center after finding out that he is an omega and not an alpha. We have your classic bitchy tsundere uke who is not a very great person and a bad mc. However, the seme is pretty great, and is definitely preferable to the uke.

In which our mc is an alpha and takes part in an experiment to experience a heat, like an omega. During this "heat", he gets pampered by two hot alphas to help him along. Basically where our mc turns into an omega for a bit via a pill.