I Was Reincarnated in Another World and Tried to Build a Nation of Beast-people and Monsters

Yamato Garo, an unremarkable Self-Defense Force officer in modern Japan, died in a training accident due to divine intervention. As an apology, he underwent training under God and was reincarnated into another world. Witnessing the reality where the human race kills sub-humans and enslaves them for entertainment, Garo decides to fight against humanity using the martial arts and knowledge he honed under God's guidance in order to save the sub-humans. This is the story of a man who would later be feared throughout the ages as the worst and strongest beast god, the "Asura God Yamato Garo," known as the Massacre King.