Subete ga F ni Naru: The Perfect Insider

Subete ga F ni Naru is a visual novel adventure game based on a mystery novel written by Hiroshi Mori. Aside from game adaptation, the novel also spanned manga, TV series, and anime series with the same title. The game adaptation follows the story in an original novel, but based on player's choices the story can branch into different directions. The game also includes some original characters. The player takes on a role of a university student who is into mystery novels. He finds himself entangled in a murder mystery case trying to figure out who murdered a woman in her private laboratory. The doors were closed from the inside and the only clue was the message left on the scene of the crime.