there were two gods Hikari and Yami and the 12 guardians of the song Ai,Heiwa,kyandi,Rousto,Nikushimi,Zetsubō,Yurushi,Ketsueki,Kī,Hakai suru,Bob,Raibu and Kesshite. Yami created the demons and Hikari created elementals. Then Yami who loved power told his demons to attack the humans so he could rule over them and this is what we call the end era and there are new adv ahead