Shirakiin Ririchiyo is the main protagonist of the story. She once resided in room number four of Ayakashi Kan who was the client of Miketsukami Soushi. She tends to put a cold front because it is her only way to cope the things she was put through. As the result of her isolated childhood, Ririchiyo harbored a cold and brooding personality. She would inadvertently lash out at others and interacted poorly with people.