This is a packaged product for the murder mystery game "Four Detectives: Episode 1, Yo-Yo and the Deer Cry." It's a game for 9 players and is a GM-less scenario. I purchased it at the Game Market and used it twice. Manufacturer: Mysterious Treasure Designer: Eko, Takeshi Mizutani Illustrator: Shikimi Players: 9 GM: Not required Playing Time: 1.5 hours (+ 1-1.5 hours for preparation and post-game discussion) Game Difficulty: ☆☆☆★★ Keywords: Modern Japan, mystery, ghosts/spirits, gods Reference Link: Mysterious Treasure introduction page https://mysterious-treasure.wixsite.com/website/shika-ha-naku