Beneath the sky, upon the earth,
humanity is extinct!
In the darkness underground,
who rules over everything?
Thousands of years ago, a meteorite fell and destroyed the world, forcing humanity to take refuge underground. This is a story of survival beneath the earth, where magic and swords run throughout, and all kinds of strange beings appear. Through a series of inevitable coincidences, the boy Leo eventually solves every mystery, only to discover that it was all just one big game...
