Saiyuki

Gensomaden Saiyuki is a Japanese anime television series that is based on Kazuya Minekura's manga series Saiyuki. The show is set in Shangri-La, an earthy paradise where humans and youkai (demons) live peacefully together. The world is invaded by "Minus Waves", which are created by the mixing of scientific research and magic in an attempt to resurrect an ancient, powerful and evil god named Gyumao. The youkais return to their bestial habits, killing and eating humans. Goddess Kanzeon sends the Buddhist monk Genjo Sanzo and his acolytes Son Goku, Sha Gojyo, and Cho Hakkai to Tenjiku (India) to stop the curse and prevent Gyumao's resurrection.

From Wikipedia, licensed under CC BY-SA 4.0.