
am i supposed to believe that it has never once occurred to yeonjae that he could be in love? not once?

I think Yeonjae is focused on "being normal" and loving a guy is not "normal" according to societal standards. So he has completely blocked the thought from his mind. Yeonjae also seems to have a hard tike understanding human emotions as seen from his childhood. He only learned to be "normal" after he met the uke.
why is he so sure that he'll be hated for being an omega again?
probably cause omegas are an inferior race
Because Jihyeon said he hated omegas.
normally men present as alphas and women present as omegas in this universe but there is exceptions where the reverse can happen. and those who are male omegas/female alphas are looked down one. also how jihyeon said he hated omegas