Born into a renowned lineage, Ririchiyo Shirakiin has lived a life of privilege, sheltered from the world by her slight build and affluent background. Despite her determination to break free from her cocoon, one thing holds her back - her sharp tongue and poor communication skills. Luckily, her childhood friend comes to her aid, inviting her to live in a remote and secure apartment complex called Maison de Ayakashi. The 15-year-old soon discovers that her new home is inhabited by an odd array of characters, each beastly with human features. Complications arise as Ririchiyo is mandated to be accompanied by a Secret Service agent during her stay at Maison de Ayakashi. Her partner, Soushi Miketsukami, is handsome and quiet, but unnervingly subservient and needy. As she prepares for high school and interacts with her new supernatural neighbors, Ririchiyo's journey forward promises to be full of challenges.