Elder Sister-Like One, The vol. 6 (manga)

Ever since Ryou returned from the hospital, life with Haru, a demon with the face of his late cousin, has been taking its toll on him. While Yuu and Chiyo enjoy their time together as brother and sister, Ryou continues searching for a way to bring his beloved Youko back to the land of the living. But his efforts haven’t gone unnoticed by Haru, who has a plan of her own…