The Rozenstruik Empire's Hand-to-hand Combat Arts was a full-contact martial art that aimed to kill. Every move in this Combat Arts was devastating and almost impossible to defend against. But of course, just how a diamond needed a diamond before it could be scratched.
To shatter an enemy's bones, one's bones must be as strong as the bones of one's enemy or stronger. Doppelgangers were creatures whose hearts were innately kind and generous. They were pacifists and disliked fighting the most.
But despite the fact that they hated fighting and bloodshed.
They were still demi-humans...
And the bodies of demi-humans were just biologically resilient and stronger than the bodies of humans.
Calvin was just an average human.
