Nine-headed dragon settled in the pond, and the sacrifice was always requested in the age that was called Ashino-ko Lake Mangeike at the Nara era. The daughter in the house from which a white arrow had stood to quieten the anger was dedicated to the villager as a sacrifice. It is cursed by the high priest Mankan (万巻上人), and this Kuzuryu is said that it tied to an opposite Japan cedar with the chain. This legend was enshrined and Kuzuryu large gracious deity was enshrined in the origin. "Choose" is originally a word that such how to use it is done like this. The high priest Mankan who saw it changes into dragon king after it reforms and says that it sets up nine dragon king companies and enshrined the dragon. It changed into manners from which not the human sacrifice after that but the steamed rice with red beans was sunk in Ashino-ko Lake.
When spreading to China because of the Buddhism spread, it became dragon king（竜王）and it became one god's Kuzuryu. Dragon become gods the defense of the Buddhism and Shintoism. Dragon king is a belief of esoteric Buddhism. The dragon assumes the god who rules praying for rain in nine esoteric Buddhism from which the this world profit is strongly requested and the belief is completed.
In the popular manga series Rurouni Kenshin, one of the techniques incorporated in the fabled Hiten Mitsurugi style is the Kuzu-ryūsen (Nine-headed Dragon Strike).