MTL - Game Invasion: I Chose the Weakest Professional Summoner - Chapter 328 human stop

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

After his first college party, Dallion woke up in a small room without doors or windows. Next thing he knew, he woke up as an “awakened” in a small medieval village in the middle of nowhere. Now all he needs to do is figure what the heck is going on. And what’s the big deal with being awakened anyway?!

Beings that create and control monsters and demons, beings that build and reign over malicious labyrinths, the chosen individuals to possess an overwhelming Unique Skill… They are the Demon Lords.

A recurring nightmare afflicted Khan's nights since the Second Impact. His dreams replayed the scenes of the crash of the Nak's spaceship, an alien race that the humans had defeated five hundred years ago.