Kim Chang-han, the winner of national coding competitions in South Korea in the 1980s, is planning to launch an initial public offering (IPO) worth billions in mid-to-late 2021. Though the road from former child prodigy to announcing, probably, South Korea's biggest IPO has not been very smooth. There were a lot of bumps along the way.

In 2014, Kim Chang-han had to lay off a third of the employees at his gaming startup. When in 2000 all three multiplayer online games at his three startups failed to float on the surface, Kim Chang-han drowned in disappointment. He had hit the rock bottom, when he had to sell his firm, now known as Krafton Inc, and join the same company as an executive producer.