The Undefeatable Swordsman

This is the story of Song Woo Mun. The son of a village innkeeper, Song Woo Mun was weak as a young man, whose only condition was that he suffered from the loss of his intelligence, due to Sansu-hwa, a painting given to him by a Sage. But unbeknownst to everyone, his life was about to change, and a new destiny awaited him, when he turned 20. Not only did he experience an awakening, but he also saw the Invincible Flower bloom in the painting. What does all this mean for Woo Mun? And what strange world awaits him?