Because it was his happiest time. A defining moment, and he wants back the love of his life. At least the good news is that he's pretty careless and the only one he wants to please is Yeongwoon, he doesn't give a fuck about the rest of the world so we have a pretty strong ML.
Okay I finished the novel and mc didn't become an omega. He stayed as a beta throughout (๑•ㅂ•)و✧ (yipeee!!!)
I'm happy he didn't become one because it'll defeat the whole purpose of his cause. He got pregnant because he sincerely wished for it (related to his fairy blood)
why are others pressed with the loan shark dude? bro was just existing fr he didn't even make any moves towards mc