Ririchiyo Shirakiin is the main protagonist of the anime series 'Inu x Boku SS'. She is a petite, socially awkward girl who struggles with expressing her emotions, often coming off as rude or aloof to others. Despite this, she is deeply caring and yearns for meaningful connections. As a resident of the Maison de Ayakashi, a high-security apartment complex for people with supernatural ancestry, Ririchiyo is under the protection of her Secret Service agent, Soushi Miketsukami. Throughout the series, she learns to open up and develop a close bond with her protector, revealing her vulnerable and endearing side.