Gensou Maden Saiyuuki is an anime series based on the manga 'Saiyuki' by Kazuya Minekura. It is a modern retelling of the ancient Chinese novel 'Journey to the West,' following the journey of Genjo Sanzo and his companions as they travel to the west to stop the resurrection of the demon Gyumaoh. The story blends fantasy, adventure, and a touch of comedy while exploring themes of friendship and redemption.