Romaji: Shiin) is a horror adventure game developed by Experience Inc. and published by Aksys Games, released for the Nintendo Switch in 2018. The story is about people who receive a mysterious mark on their bodies and rapidly die, though without a known cause. The player arrives at a mansion said to protect the people with the Mark.
The game is played similar to a visual novel, but with several points where the player has to solve puzzles on top of the typical choices. The main horror element about this game are the unsettling events the players encounters while exploring the mansion. Eventually, the player encounters other characters that can act as partners for the chapter. The goal is to help these characters get released from their Marks by stopping the spirits, either by destroying or purifying them.