Omegaverse

Blood bank isn't omega verse
But fits other things

Yep. I already read Blood Bank. And I really like it. :D

Sorry but cringed at "onegai"

If you want seriously fucked up then there is this (warning it's pretty sad and revolting)
https://myreadingmanga.info/madobuchiya-nishin-chikuhyou-no-hanayome-orc-bride-eng/
(⊙…⊙ )

Did u try harada (author , magaka )'s work ?
I think u will really like it
Try
Itou-san (the yaoi one )
It is really good
http://www.mangago.zone/read-manga/itou_san_kuraka_sui/

This one isn't omegaverse but it has violence with a sadistic seme so how about it? ---> http://www.mangago.zone/read-manga/camellia_minami/

ur suggestions never fail to exite me :')

:) I was apprehensive to share it, as it really is something else to say the least. But yes, most omega stories are pretty dark. For me anyway this one is probably the most shocking as it's not gory, but more realistic in that it properly conveys that there is no consent and the omega character seeks abortions.
http://www.mangago.zone/read-manga/shingeki_no_kyojin_dj_mihitsu_no_koi_ni_yoru_ai/
It's rare to have a happy omega series but there are a few to remedy the above suggestions
1) http://www.mangago.zone/read-manga/tadaima_okaeri/
2) http://www.mangago.zone/read-manga/kashikomarimashita_destiny/
3) http://www.mangago.zone/read-manga/romantic_joutou/
I'm sure others who are more familiar with this genre will have some more suggestions though

well i dont usually read omegaverse either but now that u mention it i should read kashikomarimashita destiny,cause its on my "want to read list for ages :')