At first, Tsukasa appears to act very cool, calm and level-headed; seemingly unsurprised by Nasa's rash and illogical actions. Despite this, she agreed to marry Nasa and does love him very dearly. As they get to know each other, she starts to display more emotions than simply acting calm; she gets embarrassed very easily whenever Nasa proclaims his love for her and how cute she is. Tsukasa also seems to get jealous at times, like when Nasa talked about how cute Aya was. While she acts indifferent towards Chitose (despite her family taking her in), she does end up developing an understanding relationship with Kaname Arisugawa. Tsukasa has a huge love for movies, games and pop-culture in general, so much so that she was quite saddened by the fact that her and Nasa's apartment didn't have a TV. She also seems to have a wide range of knowledge concerning aspects of Japanese history. This includes how to handle a Katana properly and information regarding various locations and landmarks. Tsukasa talks about such things as if she had experienced them herself but never elaborates. She also appears to have some connection with the moon as her grand-aunt, Tokiko, borrowed a moonstone to help "ease her" . She is also immortal and trying to be a normal human again.