“Pendudukan Masa Depan … Raja Iblis.”
- Alternatif: いちばんうしろの大魔王, Demon King Daimao, Ichiban Ushiro no Dai Maoh, Ichiban Ushiro n
- Tipe: Light Novel
- Bahasa Asli: Japanese
- Status: Completed
- Rilis: 2008
- Genre: Action, Adventure, Comedy, Ecchi, Fantasy, Harem, Romance, School Life, Shounen, Supernatural