Spirit Sword

Spirit Sword summary:

Two men explosively conquer a continent!!
Luke Esteban, while on his way to retirement after serving in the military for five years, is ambushed by Orcs and taken prisoner.
The Orc warrior Kurotan reveals the secret of the Orcs to the imprisoned Luke and beseeches him for help.
The secret? A G.o.d has bestowed a ‘spirit sword’ that can absorb souls unto his endangered tribe.
A sword that can transfer an Orc’s soul into the body of a human.
“Help me become human, and I will lift my axe for you for the rest of my days…”