How much money do you need to retire in Korea?

Excuse me, I'm quite interested in the financial planning aspect of retiring in Korea. Could you possibly enlighten me on the approximate amount of money one would need to have saved up in order to comfortably retire in this country? I understand that the cost of living, tax regulations, and other financial factors may vary, so I'm looking for a general ballpark figure. Additionally, if there are any specific strategies or investments that you recommend for retirement planning in Korea, I would greatly appreciate it if you could share them with me. Thank you for your time and expertise.