Torokeru hodo ni kamaretai
Complete | AMAMIYA Kayou | 2018 released
First story is about an alpha and omega pair who aren't fated, but make it work, stopped reading the second pair at chapter 5
Yuujou Haramase Triangle
Complete | Amamiya kayou | 2019 released
3 childhood friends. Alpha 1 and omega like each other, but parents set up Alpha 2 and omega. Alpha 2 also likes Alpha 1
Maku ga Oritara Bokura wa Tsugai
Complete | Zarame same | 2019 released
Scrolled through. Omega idol hates this one guy but then fucks him
Shinnyuu Shain no Omega desu ga, Senpai Alpha Kaizoushimasu!
Complete | Kondou asahi | 2019 released
Kyou Kara Omega ni Narimashita