
There's no such thing as "romance" for this manga. There's a 12-ish years timeskip and since then, they didn't met each other.
Oh the ending is an open ending btw

MY BADDD I FORGET TO CORRECT THE POST
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They accidentally met in the last panel of the last chapter. On the same place they first met (here the mc and the rental guy crossing the road but they went the opposites way), but it's 12 years later, they notices each others then the story ended.
Sorry if it's hard to understand because eng is not my main language

Huh wait maybe I missed it but the uke wasn't an omega before?

Yeah you probably missed chapter 17, there was a part where he was describing how he got into boxing, for a time till he was 17 or 20 he was in between Alpha and Omega, so they could not identify his second gender.
Because of this, his family hated him and say him as a defective product, therefore he ran away and didn’t come back till later on. This is also why he is in such a tough spot with his family!
Super important, I recommend you reread it cause not sure if I got everything in my explication!
I'm kinda curious does the MC's mom alive or not since you know, she kinda not existed until now and only being mentioned in the earliest chapter by the dad and grandpa