It’s completed on a different site - I didn’t read it myself but comments said it has a trash ending. Apparently the blonde Omega fell in love with the Alpha - when the alpha switched to being an omega temporarily due to a strange phenomenon, blondie took advantage of that and made it permanent with pills. The “alpha” now had his dream ruined because of blondie…
Update : I ended up reading it on a different site... it was ok.
Omega Bite