Ritsuka is a strong, optimistic and straightforward girl who is also very deluded. She cares very much for everyone she knows and doesn't like to see them get hurt. She even says, "I hate watching people hurt and be hurt." She also is shown to hate being left in the dark about everything and believes that everyone is their own person, not an object to be toyed with. Ritsuka is the little sister to her composer older sister Siania Tachibana.