Romance[]
Kouichi Shindou[]
Kouichi and Chika began dating after Kouichi confessed to her and she immediately responded with "Ok". Chika seems unphased by all the other girls that flock around Kouichi, and has no problem with them giving him chocolate for Valentines or him giving them graduation gifts. Due to Kouichi 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 Kouichi, who had to repeat his second year, is not an appropriate person for her. The way she treats Kouichi now has been heavily influenced by Izumi Miyamura, which is now much more forceful. Instead of asking Kouichi to stop smoking, she now slaps the cigarette out of his mouth, and, along with Miyamura, they force Kouichi to participate to eat cheese in an attempt to get him over his aversion to it.
Friends[]
Izumi Miyamura[]
Chika and Miyamura are good friends where most of their conversations are about Kouichi Shindou. Miyamura has managed to convince Chika that Kouichi is actually a huge masochist, which leads Chika to act more violently towards Kouichi, 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".