Responses
I completely forgot about this since I haven’t read the manhwa in months, but if I remember correctly, he hid the fact that he was an omega and pretended to be a beta. I could be wrong, though. I think in the previous chapter, when they found out he was actually an omega, he got suspended from his job because of his secondary gender.

joshua managed to hide the fact that he was an omega for years but i don't think that would've been possible? wouldn't he have had to provide documentation showing his personal information like name, age, and ofc secondary gender??? unless he forged it but that's a whole other story lol
correct me if im wrong/missed sm