I'll Resign and Have a Fresh Start in This World

Story:

Lee Soo, the protagonist, had a routine yet content life. He lost his parents unexpectedly five years ago, and he has struggled to get by ever since. He was worn out from the oppressive everyday living when a doorway appeared in the space.He has never gone to this place, and he has no idea what it may entail.Starting as a commoner and progressing to feudal ruler is a healing life to experience in a new universe.