A god created a world to test if humans from earth has the power to defeat the demon lord and conquer another world without cheats. But sadly no matter how much these otherworlders try they always failed, as if they were to reached the bottleneck of a wall they can easily reach then become's impossible.
Since they were born, summoned, transmigrated. They were granted nothing but the bloodlines obtained from their ancestors, if they are to be born from a rich noble family or a fallen one with deep history.
But alas it was not the reality they imagined as the common sense in this word vastly differ from the one they lived with. No matter what they do, they are always fallen behind by their peers from this new world. As if an invisible force were limiting their ability to freely move in this world like a chess piece.
The creator of this world have become tired after some time. So he figured out handing them one wish before being reincarnated or sent into that world. But to those who have been summoned are different compared to the ones that he have given a wish.
Since he already created a system that automatically grants summoned individuals random classes and abilities varying to each and individuals strength, ability, and emotion. Some exceeded those of the norm, some hone their skills to grow strong, while some healed those that are injured. It was never known to how many classes and their ranged of abilities that have been revealed.
After a massive war that happened in this world started by three mad humanoid beings. The first who is made of flesh a former mortal who had turned itself into its best creation of the masses that it created, the second the lich who have an army of undead, and the metal cracking with gears as the sounds of clocks and gears can be heard from its massive towering body to the clouds, behind it was a massive army of giant robots towering over sixty meters.
The war was enivitable but was stopped as a being from the sky that had many wings from its back covered the whole environment with radiant light. Halting the war to a stop but the casualty was immense, thousand years later many stories of powerful beings of different races have spread wide in the continents that was one massive continent that have been split apart from constant fights.
But the the history fortold till today that even such people of the past cannot even scratch the demon lord. As the whole world was filled with beings who are already equal if not stronger than those who have been engrave in history. But the demon lord standed still on its throne waiting for the chosen to slay him/her.
The creator of this world never thought that this planet had evolved to withstand an attack from those who have cheats from another world, and now they were common across all continents. And it seems that the stronger the otherworlders ability or how broken it may be.
The world can withstand it and even worse the demon lord is getting stronger if it fought against stronger opponents and gained their abilities and skills from just a glance. and new creatures are getting created if not coming to life from battles and experiments. And now the world is constantly growing stronger and stronger and later trancends to a new hight, giving some interest and attention from those outside.
And now the world is constantly watching him peacefully as if it was alive and looking at its creator as a loving father with adorable eyes begging to get a head pat.