Incarnation of the Strongest Human

A world were Sub-Races are oppressed, ruled at and becomes a slave for both entertainment and pleasure. A world were humans stands at the peak with pure strength that even rivals the strongest race. One day a scenario will happen which shocked that entire human race. Our protagonist that will soon be known as Alex died inside his school during an earthquake. After waking up he met a god and gave him a chance to live a second life in another world. The god did not gave him any objectives or mission, the god simply implied to 'live however you like' however, after asking about the world he will live in. Alex set up his own mission and embark on his journey to the world. Will he become an enemy of the Human Race? That's up to him. *-*-*-*-* Note: I'm Completely an Amateur.