Tsukasa - the younger twin sister Kagami and lives with his parents and two older sisters. She is studying in the same class as the Conata. It is beautifully prepared, but not very good in studies and sports. She is kind, a little silly, but very diligent girl who gets very upset when she is constantly compared with his sister, who in many ways better than her. Tsukasa is not always able to catch the essence of the conversation, as is wont to hover somewhere in the clouds. She often asks his older sister to help her with homework, though before that honestly tries to do everything herself.
Tsukasa is also known for his hairstyle, because it is identical with the hair Akari Kamigisi of anime «To Heart».