Chika has black hair that she wears in two ponytails. She has bangs that have white highlights.
Chika tends to be a quiet and subdued girl, especially around people she's not familiar with. Usually content to wait in the background while Shindouu's talking with his friends, she only usually interacts with his closest friends, like Miyamura and Tanihara. She's a big eater, usually eating 2-3 people's worth, and able to eat odd combinations of food with no problem, like natto with cheese.
Izumi Miyamura helps Chika to walk due to her leg being twisted.
Shindouu and Chika began dating after Shindouu confessed to her and she immediately responded with Ok. Chika seems unphased by all the other girls that flock around Shindouu, and has no problem with them giving him chocolate for Valentines or him giving them graduation gifts. Due to Shindouu being one year behind her, during graduation, she promises to wait 1 year for him. Their relationship is not approved of by her parents, as they think Shindouu, who had to repeat his second year, is not an appropriate person for her. The way she treats Shindouu now has been heavily influenced by Miyamura, which is now much more forceful. Instead of asking Shindouu to stop smoking, she now slaps the cigarette out of his mouth, and, along with Miyamura, they force Shindouu to participate to eat cheese in an attempt to get him over his aversion to it.
Chika and Miyamura are also good friends. Most of their conversations are about Shindouu. Miyamura has managed to convince Chika that Shindouu is actually a huge masochist, which leads Chika to act more violently towards Shindouu, thinking that is what would make him happy. Miyamura may not know what Chika's last name is, as he always calls her "Chika-chan".
- Her name Chika means "thousand" (千) (chi) and "good, beautiful" (佳) (ka).