Devil Summoner: Kuzunoha Raidou tai Shibito Ekishi

Devil Summoner: Kuzunoha Raidou tai Shibito Ekishi, translated as "Raidou Kuzunoha vs. The Messenger of the Dead", is a prequel novel that takes place before Devil Summoner: Raidou Kuzunoha vs. The Soulless Army, shortly after Raidou Kuzunoha the XIV came to the capital.