North Koreans are granted immediate citizenship in South Korea because, according to the South Korean constitution, all North Koreans are South Korean citizens.
They receive a lump sum payout, which has been equivalent to $20,000 USD in the past, though this payout has decreased throughout the years.
Source: https://www.crossingbordersnk.org/blog/refugees-in-south-korea/2020/10/22
Of course it is. It’s very confusing and bizarre NK did that. It’s like a clown ran on stage during the chainsaw juggling.