The world was once again plunged into darkness by 
the Amano-Iwato-Gakure that occurred about two hundred 
years ago.The "Three Sacred Treasures," imperative to reclaim 
the light, were stolen by those from Yomi, and the world was in 
disarray.

Time passed, and humans imbued with the power of Yomi 
began to be born in this world.The people who gained Yomi's 
power rebelled to reclaim the "Three Sacred Treasures."

*Amano-Iwato-Gakure - the hiding of Amaterasu Omikami, 
the sun goddess, in the heavenly rock cave
*Yomi - the Land of the Dead / the World of Darkness 