nothing of that sort
Turns because of golden alpha pheromones
Okay this is very confusing to explain but basically ml is a ghost which they are extremelyy rare like only 2 before him in the whole world but yh ghost's can turn betas into omegas, and the mc is his didi which basically means they were destined to be together since they were born, they are the only ones that can smell their ghost and didi pheromones which is different from regular pheromones and he ends up becoming a dominant omega due to his ml ghost changing him so he's a didi and golden omega at the same time.
I haven't read the novel yet, I wanna know if he's an omega from the start but diagnosed as Beta or he's originally a Beta and turn out/switch on to Omega because of Weikun