Ichiban Ushiro no Daimaou is an anime series based on the light novel of the same name by Shōtarō Mizuki. It follows Akuto Sai, a young man who enrolls in a magical academy with dreams of becoming a high priest. However, his life takes a turn when a prophecy predicts he will become the Demon King. The series explores themes of destiny, friendship, and the struggle between good and evil in a comedic and action-packed setting.