How much money do you need to retire in South Korea?

I'm curious, how much money would one need to retire comfortably in South Korea? I understand that the cost of living, inflation rate, and social security system all play a role in determining this figure. Could you please provide me with a ballpark estimate, taking into account factors like average monthly expenses, healthcare costs, and potential investments? Additionally, I'd appreciate it if you could also discuss the impact of taxes on retirement savings and income in South Korea. Thank you for your time and expertise!