How to Survive as a Wandering Knight

Yohan died broke in modern Korea and woke up broke again -- now the lowest-ranked son of a noble house in a savage medieval world. Armed with superhuman strength and modern know-how, he chases the money that buys his way out -- but every scheme turns into heroism. Can a man who only wants gold survive an imperial enforcer razing noble houses across the realm, or become another body in the bloodshed?