Aria Clement is one of the twelve sisters in the anime series 'Sister Princess.' She is the eleventh sister and is known for her gentle, quiet, and somewhat mysterious personality. Aria often appears with her beloved teddy bear and speaks in a soft, slow manner. She cares deeply for her brother and her sisters, bringing a calming presence to the group. Despite her introversion, Aria is cherished for her kindness and unique, dreamy outlook on life.