14 years ago, a battle took place between all the hidden villages. The hidden village of the shadow released their secret weapon, a fearsome shadow wolven spirit demon by the name of Gokuangyu, which brought carnage on a region-wide basis. The helpless nations turned to the hidden village of the sun, who housed a valiant shinobi called Takaro. He aided a counter-attack using a forbidden jutsu, therefore summoning the legendary Kazerai dragon demon. The result was horrible as many lives were lost as the rampaging giants fought recklessly without end. Realising he had made a terrible mistake, Takaro decided to use his ultimate sealing technique: Hidden demon seal. At the cost of his life, he sealed the two demons inside the bodies of two newborn babies, Raikido and Loupari.