A visual novel-style detective game released for Japanese mobile phones. Originally debuting in 2002, it was rereleased on May 1, 2006 with updated graphics as Izumi Jiken File Vol. 1 - Shiosai-hen Deluxe Edition. You can easily feel like a detective by reading a novel! "Mystery Adventure Izumi Case File - Shiosai Edition" (hereinafter referred to as Izumi Case File) is a mystery adventure game that "deduces the criminal" based on the situation at the crime scene and the information collected by asking.