
It might be the cultural expectation that kids HAVE TO fund their parents retirement/living expenses when they're grown and working. In Asian cultures, especially East Asians, children are looked at as retirement piggy banks. It's expected and if you try to not fund your parents' lives, you'll be shamed and looked down on.
A lot of these manhwas will have this trope where the MC has to unwillingly fund their parents' lives/debts and then break free from that to live their own lives. It's fantasy fulfillment for the readers and possibly the writer.

Spoiler
So Seo An is going to meet with the dad without telling Woowon and give the dad money and have him sign a paper that says he will never contact Woowon again. But loe and behold, the dad spends all that money and goes to Woowon asking him for money. Woowon says no and the dad gets mad that he begins to think of ways to threaten Woowon and Seo An.
Also, the peeps that invited Woowon to the party and Seo An showed up and punched the guy in the face, yeah we'll they're planning to publish that.
Woowon is going to love across seas... Well.... That's what we can see but, idk if that's gonna happen with all the shit that's gonna go down.

Yeah I see SO MUCH manhwas showing shitty parents that act like their kids own them the world, must pay for everything inclusive their debts that’s why I asked if this was common in Korea, like it seems very sad to me now. Not that all the parents are shitty, but that it’s like in the culture that kids have to provide for their parentes no matter what .-.

Its definitely a culture thing. Idk much abt korea but ive heard in china they even have a law the requires children bio/adopt to care for their parents whether they were good or not (so even if the parent abused/neglected/abandoned them). And I would be surprised if it was a common expectation through out asian.
And here I go to another story with someone having to pay for his fathers debts. Like is this even common in Korea? Like 50% of the population have debts because of their shitty parents? Or authors are just in love with this trope?