After studying the mechanics of the Revolt of the Demon World Jutsu, Raido began to study the principles in order to create a jutsu in a similar manner that is more aggressive. Raido releases a unique spirit similar to the Pretas called Jikininki or human-eating ghosts. The spirits or spirits are composed completely of Yin Chakra to the point the ratio of Yin to yang is unbalanced. The Jikininki is a ghost or spirit that feeds on humans and devours them, craving their physical energy. This hungry ghost suffers from supernatural hunger and thirst and feeds solely on the energy of others. In order to quell or lessen its insatiable appetite it actively hunts its prey relentlessly till it has been successfully stopped or it has devoured its prey completely. Any physical contact with the ghost