I've been watching K-cinema on/off for a few years, old boy really f'd me up even though I thought I got used things like Bijita Q type J-films. But, if you're looking for what that would look like via a Korean-Californian perspective watch Ms. Purple:
https://www.youtube.com/watch?v=XsYh3MAE0b4
It makes the plight of the Korean immigrant, and ultimate success in LA, all the more poignant. I was a SoCal kid during the LA riots when K-town was burned to the ground and many were left destitute and went bankrupt, now K-town is most of DTLA and has expanded into a lot of Orange County displacing a lot of the Japanese and even some of the mainly Chinese influences.
So at that point, maybe its 2 parents and 2 single adults so you cannot combine their income for tax purposes. Maybe each makes $15k which is a very low amount for paying any taxes.
If a family of four tried to live in Santa Monica on $59k -- they would only have $39k after taxes. You can't rent even a single shitty room for less than $1k per month. That leaves them $500 a month per person. Health care would take at least $58 (the fine if you don't have health care). That leaves you $440 ($14.50 a day) for everything else. It wouldn't be Parasite bad. But it would be awful.
If you just moved to Compton or San Bernardino, it would be fine.