Given the pet name "Ika," Tsukasa is an honor student described as being capable of accomplishing anything to which she puts her mind. She is said to be gifted with both intelligence and beauty, but she became obsessed with a brilliant student outshining even her, Akiha Tohno. After the incident in the story is resolved, she cannot stop herself from quivering in Akiha's presence, but she is able to resist the urge to run away by doing her best to muster up her courage.