The last Buddha who existed in this world is Buddha. It is Buddhist teaching that the Buddha does not exist in this world after that Buddha has gone. And Jizo Bosatsu is believed to save us in this world without Buddha. Rokugo is the world in which we could be born again. There are Jigokudou who will compensate for the crime, Gakidou as a punishment for forsakening a troubled person, Chikusyoudou to be reborn as an animal, Syuradou constantly fighting, Ningendou with a desperation, Tendou who is said to live by Tenshin. Jizo Bodhisattva will visit all these worlds and save religious sentient beings.