My Dragon System - Chapter 532: Three worlds in one

Lucius Lothra, a passionate gamer suddenly find not just himself but the whole world in a fantasy world where Knights and Mages exist.All Earthlings who once played a VR Game called System Online wake up in this world with their own Systems which they created when playing System Online. Lucius had just created an account when a world ending event occurred so he didn't play the game but he did manage to create his own system.The only problem that Lucius has is that he doesn't know if his system works or not and the only way to find out is... DEATH!!!

Fifty years ago, Dragon City transmigrated to the Other World. Alone in the world, they lifted the banner of Earth’s civilization and fought against the terrifying forces of the Other World.

The world was once at war with 10 alternate worlds. This was known as the Concept War and our world won 60 years ago. All of this was concealed so no normal people are aware of this fact in the current time.

After the death of his grandfather, the high-school student Sayama Mikoto is suddenly summoned by the giant corporation IAI. He learns this world is headed for destruction due to the acceleration of the Minus Concepts. To prevent this, negotiations must be undertaken with the survivors of the other parallel worlds so their 10 concepts can be released.

And so Sayama is caught up in the final battle to clean up after the Concept War which left behind so much enmity.