
Why Does Nobody Remember Me in This World?
In a world where humans triumphed in a great war, Kai guards sealed crypts containing their enemies. But when “World Rebirth” overwrites history, he’s thrust into an alternate reality where humanity lost the war and he’s been forgotten by everyone he knows. Now, this lost hero must rise to restore the world’s balance!
Kai's duty as a member of the Human Protection Agency is to ensure that the four races from The Great War are kept sealed in their graveyards. Humanity has been at peace for 100 years, until one day a portal opens and the world he's known ceases to exist.
In the graveyard where the demons were entombed in his world, Kai finds a girl whom he cannot identify as any of the known races. When she asks him for help, he doesn't hesitate for long. After freeing her from her chains, mysterious things happen again.
A battle begins between Last Riser and Kai with Kyoko’s aid. Rinne, frozen out of fear, recalls her past with Sid. They manage to lure the monster out of the graveyard as all the races join forces to defeat one enemy; The enemy of the world, Last Riser.