Born into privilege, Ririchiyo Shirakiin has long been sheltered and reliant on others due to her wealth and delicate appearance. Determined to break free from her dependent ways, she faces a major obstacle: her sharp tongue and poor communication skills. Seeking change, she moves into Maison de Ayakashi, an exclusive residence filled with eccentric half-human, half-youkai residents. Tasked with a Secret Service agent as a companion, Ririchiyo finds herself paired with Soushi Miketsukami, a handsome yet overly devoted and submissive partner. As she navigates her new living arrangements, strange neighbors, and the challenges of high school, Ririchiyo's journey towards independence is fraught with complexities and surprises.