Tsukasa is the younger fraternal twin sister of Kagami and lives in a six-member family household with her parents. She is in the same class as Konata. While she is not good at studying or sports, she excels in cooking. She is portrayed as the stereotypical friendly, good-natured but clumsy person. She is often portrayed as an airhead who is unreliable and is always compared to her twin sister, who generally does better than her in most areas. It is often implied that Tsukasa is unable to follow the gist of complex conversations. Tsukasa will often ask her older sister for help on her homework, though it usually does not make much of a difference. She is also known for having her hair in the same style as Akari Kamigishi from To Heart, something hinted at frequently in the series.
