This demo introduces a supernatural detective story set in a fantastical 1930s Tokyo. Raidou Kuzunoha XIV, an apprentice detective who also serves as a Devil Summoner protecting the Capital, takes on a case that begins with a young heiress’s strange request and her subsequent kidnapping. His investigation reaches the Dark Realm, a dangerous passage between the human world and a demon-filled netherworld, as the mystery expands into a conspiracy threatening the nation.
Investigation and real-time combat are tied together through Raidou’s demon allies. The demo description highlights capturing demons through the art of confinement, recruiting and developing more than 100 possible allies, and combining them with Demon Fusion to create new demons. Those companions also join Raidou in case investigations, while his own progression is part of the adventure. The premise and mechanics give the game a distinctive mix of detective work, supernatural exploration, and action-focused RPG systems.
As a demo, it provides an introduction to the main game’s opening, with the documented playable portion reaching the beginning of Chapter 2. The store description also notes that activities such as level-grinding can continue in accessible areas after that content is completed.