At its heart, this is an escape-room style horror game. You play as Kaori, a girl trapped within the walls of a decaying, haunted manor. Unlike action-heavy horror titles, your primary goal here is to .

What makes unique is its balance of difficulty and reward. While the game can be punishing, the satisfaction of solving a complex puzzle while under the threat of discovery provides a massive adrenaline rush.

It sounds like you're looking for engaging content (e.g., a synopsis, review, or narrative preview) for the specific work: — likely a reference to an audio drama or game from DLsite (given the "RJ" prefix).

“Kaori didn’t believe in ghosts. Then the house locked its doors from the outside.”