Underworld King

*Three hundred years ago, there were three great cultivation families on Earth: Golden Butterfly, Otherworldly Demonic Clan, and Nether Clan.  
At that time, He was still the leader of the three great families, but three hundred years ago, He left this world without saying a word. 
Now he is back ！
 Facing the huge change of this world，what is he going to do? 
With the great enemy - The Rakshasi King chasing him. Will his carefree life to be continued ？