Five years ago ... Monsters gained the power to warp the 4th dimension. They became invincible. Humankind surrendered, ending the long war between monsters and humans. Thus, the humans became slaves.

Five years ago ... Monsters gained the power to warp the 4th dimension. They became invincible. Humankind surrendered, ending the long war between monsters and humans. Thus, the humans became slaves.

A world unlimitedly similar to the present age. However, this world was a world that coexists with intellectual life forms different from humans, called "elves". When has elves evolved from