MTL - The Troubleshooting Diary at Hogwarts - Chapter 65 November 24 Blizzard

[Hottest Blood-Boiling Thriller]The Divine Level Expert from the apocalypse is reborn in the city. He intended to live a low-key, restrained life, but women broke off engagements with him, his family abandoned him, and everyone looked down on him…“I was low-key, but you forced me to be arrogant. Since it's come to this, then let Heaven be in awe, let the earth tremble, let the whole world go crazy because of me!” —Ye Tianchen.

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

The paramount existences among daemons are known as ‘Great Sages’.

A young man leaves the mountain village and wanders the world, entering the legends step by step, becoming a part of mythology itself.