'About 7 years ago, an alliance between three of the greatest clans was made. This alliance lead to one of the greatest apocalypses the realm had ever seen before, when two of the clans annihilated the peace-keeper clan in the realm - Raihono .'
'Despite they were greatly outnumbered, the tribe still had few survivors. The lucky ones escaped the invasion but started dying out. Two survivors still live today, and strive to protect the realm like their clan once did. These survivors are: Lero and Shirou'