Sword God's Ascension

In a town known for its beauty and intrigue, a man named Jee Yun lives a life shrouded in mystery. Despite being labelled as a “useless piece of trash,” he is married to the most beautiful woman in town, a fact that has made him infamous among the townsfolk.
A surprising turn of events brings two young girls from the prestigious Spincog Academy to his doorstep. They carry a letter from their dean, a man of great stature and one of the six Martial Grandmasters in the town. The girls are puzzled by the dean’s interest in Jee Yun, a man who seems to have no notable achievements or abilities.
Upon meeting Jee Yun, the girls find him to be an ordinary man, neither handsome nor impressive. However, his calm demeanour and worn-out clothes hint at a life of complexity and hidden depths.
What secrets does Jee Yun hold?
Why would the dean of Spincog Academy, one of the six Martial Grandmasters, send a letter to him?     
What is the true nature of Jee Yun’s relationship with the town’s most beautiful woman?