Kashikomarimashita Destiny
(the 2nd pairing is a Alpha x Beta)
Beta pairings on this page and the next page: https://www.mangago.zone/home/mangalist/1001835/?filter=&page=11
https://www.mangago.zone/read-manga/kashikomarimashita_destiny/ (second pair)
https://www.mangago.zone/read-manga/romantic_joutou/ spoilers I guess: (I hate the story, but at least they got a happy ending)
Alpha x Beta (5 chaps): https://www.mangago.zone/read-manga/oblivious_mr_b/
Thank you guys!!
Recommend some BL omegaverse with Beta pairing please. Beta xBeta, Alpha x Beta or Beta x Omega