Myth Beyond Heaven - Chapter 69 - Bandit Camp

Liu Jun traversed into a future world and was not able to afford an auxiliary Intelligent Brain. Just when he was mocked by his classmates, he accidentally acquired the gift of fungus evolution, transforming into the Fungus Lord, possessing a Mushroom Soup World.[Welcome to Fungus Planet][Life is but a soup of 70% water fungi cells, your task is to bring plague, disease, and despair to the filthy world, fighting against humanity.]

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 Great Norther Wall. The Dragon Knights. The Lords of the Winter Mountains. The Descendants of the Primordial Dragon. These are the various titles of the Grand Ducal Clan Ragnar, which boasted a rich, thousand year history. Theo Ragnar resolved himself to aiming for the throne of that very same clan. ‘These cursed chains weren’t something I could slip out of. They were meant to be broken with strength.’

Aoki’s resolute face was indifferent. “If the sun doesn’t shine on me, please let me be surrounded by darkness!”
From a different perspective, look at the entire Pokemons world.

- Description from Uukanshu