Saiyuki (幻想魔伝最遊記 Gensōmaden Saiyūki) is a manga series by Kazuya Minekura which was serialized in G-Fantasy from 1997 to 2002. The story is loosely based on the famous classical Chinese novel Journey to the West (XīyóuJì). In 1999, the Saiyuki OVA by Tokyo Kids was released. A year later it was adapted into an anime series by Studio Pierrot. The Gensomaden Saiyuki: Requiem movie appeared in theaters in Japan in 2001. A sequel to this movie is the Gensomaden Saiyuki: Kibou no zaika OVA, which is actually animation taken from an interactive game.
There are two sequels and two prequels to Saiyuki; Saiyuki Reload (最遊記RELOAD?), a manga sequel adapted into an anime, and Saiyuki Reload Blast are the sequels while Saiyuki Gaiden and Saiyuki Ibun are the prequels. Saiyuki Reload Gunlock (最遊記RELOAD GUNLOCK) is an anime sequel to Saiyuki Reload. Saiyuki Gaiden had a few chapters adapted into the original anime and its own OVA that has been produced by Studio Pierrot and will be dubbed into English by Sentai Filmworks, using the original voice actors of Gensomaden Saiyuki.