Ya’ll are missing context

I don’t think the omega and that brother guy are brother’s. It’s the alpha referring to him that way.

WHAT. THATS ABSURDD

Woa that's a theory there.

I am super confused, so that doctor guy was attracted to his brothers own scent?

I think it's a theory og commenter had, I thought maybe because they're brothers that they have similar compatibility to the MC.

i think that 2

Not a theory, it comes up in the next chapter. But the doctor can smell Kotani’s scent on Shishikura which is why he liked him lol

..OH..

Oh my gosh your kidding right. That's horrible. So he really was attracted to his brothers scent like that Urrgh man.