Saiyuki is the work of Minekura Kazuya. The story preludes the chaos that begins in Togenkyo which is the holy land where humans and demons used to live together peacefully and got along well. However after the attempt of someone to use the art of chemical and magic together from the ancient scripture to return life to Gyumao, the super demon who was killed and buried in Tenjiku by Nataku Taishi, one of the five gods who rule the heaven, Genjo Sanzo is called to Shayou Choan Palace. He is assigned to go to the west land where the chaos begins to find out who is behind all the turmoil that is rising and to stop its process. Genjo Sanzo is a sanzoboshi which is the highest rank of the monk. Joining along in the journey are Son Goku, Sha Gojyo, and Cho Hakkai whom Sanzo is assigned to work with by Kanzeonbosatsu. Kanseonbosatsu is the goddess of mercy and also one of the five gods of the heaven.(And, if I might add, she is hermaphroditic!) Sanzo didn’t agree to take them along at first because the three are demons, although each of them has part of human that sustains their sanity. However that is yet to be found whether he’s going to believe in his "eyes of the heart" on the view of their relationship as they rejoin, learning more about others’ painful backgrounds, and battle together along the way to the west.