This story sets in the modern world where our protagonist returns to. After being abandoned, the once hero became a demon king as his fate sets him forward into. His adventures in the another world can upon an end after ascending and being forcefully sent back into earth. 

Yuan lives his life ordinarily in his homeworld but things don't just end as how it should be. 

If only that Gates didn't appear in four months of time after he had returned. If only that everything remained as simple. But no, it didn't. Monsters came out of these gateways and wreck havoc in the human world, games are starting and his life of simplicity didn't go as planned. 

On the good side, he got kids, well there's three of them and he can reunite with his wife - speaking of which, the four were the masterminds.

This story is randomly written. Have vague ideas on how it should end. This story is present at first on scribble hub, doing my best to catch up.