http://www.mangago.me/read-manga/omega_wa_pink_no_yume_wo_miru/
alpha doesn't despise omega in this one tho, but it should be close to what you are looking for!!
I feel like there might be a couple that meet this criteria (I don’t know, not sure), but this is the only one I can think of at the moment.
http://www.mangago.me/read-manga/as_sweet_as_this/
shinai naru omega he
by ariki eiko
?
Thank you it is close but not it but thanks I love that story
Thank you so much that's one!
It's the story where an omega works for an alpha as a beta, the alpha despises omegas but the omega is being forced to do so