Overbearing Tyrant

Earth has been invaded by aliens—
Park Hyunsung, the commander of a militia, fights desperately when he encounters an alien invader commanding robots and mutants. He relentlessly pursues the fleeing alien through a warp, only to get caught in it himself and lose consciousness.
When he opens his eyes, he discovers that he has become ‘Ian Albern,’ a young and frail lord with blue eyes! Determined to reform his corrupt territory from the ground up, Ian takes action—much to the shock of his vassals.
From the feeble Lord Ian to the mighty Lord Ian—
A spectacular story begins!