Clamp School Paranormal Investigators(CLAMP学園怪奇現象研究会事件ファイルClamp Gakuen Kaikigenshō Kenkyūkai Jiken Fairu) is a set of three illustrated novels written by Tomiyuki Matsumoto in collaboration with Japanese manga group, Clamp. These novels are based upon role-playing game (Clamp Gakuen TRPG) sessions played by Game master Tomiyuki Matsumoto, Takeshi Okazaki and Clamp members. The main characters are based on player characters played in the game sessions. The novels were published by Tokyopop in North America in 2004 and 2005.