The 3rd Season of Overlord.

The year is 2138. The online game Yggdrasil, which was once popular, is about to be cancelled. Player Momonga, his comrades, and their prosperous guild have silently been waiting for this moment. However, even once the servers have shut down, the game doesn’t log them out, and the NPCs seem to have suddenly developed wills of their own. Outside of the guild, a whole new world is developing.

In the MMORPG Cross Reverie, Takuma Sakamoto boasted of such an overwhelming amount of power that other players referred to him as the Demon King.

Then one day, he is summoned to another world in the form of his character from Cross Reverie. There, two girls insist “I am the one who summoned you.” The two girls attempt to cast enslavement magic upon him in order to make him into a slave. But! Takuma’s passive ability (Reflect Magic) activates! Now the girls are the ones who are enslaved to Takuma…!?

The curtain rises now on the story of a (pretend) Demon King who plunges forward on an adventure in another world with his absolute power!

Yuuto Suou is a boy from our everyday reality who has wandered into another world at the dawn of war called Yggdrasil. Here in this world, countless nobles are fighting for dominance and it's survival of the fittest. For sixteen-year-old Hayato though, all he had to do was call on his knowledge from our world as his weapon. This leads to him rising to command a few thousand troops as their suzerain (patriarch). The story now follows this boy who became King in another world and is surrounded by beautiful Einherjar who swear their allegiance to him.