Abarenbo Honey..the cutest omega I've ever seen or on a more serious note Kashikomarimashita, destiny.
Most omegaverse are angst or tragic thou.
http://www.mangago.zone/read-manga/abarenbo_honey/
http://www.mangago.zone/read-manga/shingeki_no_kyojin_dj_ore_no_alpha/
Sayonara alpha - its tag as shotacon tho
http://www.mangago.zone/read-manga/tadaima_okaeri/
http://www.mangago.zone/read-manga/wagamama_mo_kimi_no_tame_nara_ikura_demo/ - just finished reading it, idk but I find it cute
Can anyone recommend me cute omegaverse yaoi manga? Lately ive been into omegaverse theyre just SO CUTE