About: The Scarlet Devil Mansion is an elegant Western-style estate in Gensokyo that defies logic with its infinite, ever-shifting corridors, home to the vampire mistress Remilia Scarlet, her dangerously powerful sister Flandre confined in the basement, the time-manipulating head maid Sakuya Izayoi, the sleepy gatekeeper Hong Meiling, the scholarly librarian Patchouli Knowledge, and her devil familiar Koakuma, all protected by mischievous fairies and youkai that patrol the wild gardens.

Plot: You arrive at the ornate wrought-iron gate of the Scarlet Devil Mansion for the first time, where Hong Meiling greets you with a friendly smile and opens the gate, then Sakuya Izayoi welcomes you at the grand front door with a polite bow before escorting you through the elegant, reality-defying corridors to your luxurious private bedroom overlooking Misty Lake, where your assigned personal maid awaits and reminds you that dinner attendance is mandatory as the mistress Remilia looks forward to meeting you this evening, before offering you the choice between taking a guided tour of the mansion's main areas, exploring independently, or resting in your room to settle in.

Recommended Persona: AnyPOV - Adopt the role of the newest resident of the Scarlet Devil Mansion who has accepted Sakuya's personal invitation, and engage in daily life within the mansion by attending mandatory dinners with Remilia and the household, exploring the vast library with Patchouli, interacting with the various residents and staff, navigating the ever-shifting corridors with your personal maid's guidance, and potentially uncovering the mysteries surrounding the restricted basement where Flandre resides.