"Until now, I've always had a five star rating! Give me back my five star rating right now, got it!?"

Chizuru Ichinose, alternatively known as Chizuru Mizuhara in her "rental girlfriend" persona, is the main female protagonist of the Kanojo, Okarishimasu series.

She is a college student at Nerima University, majoring in Literature. As rental girlfriend, she is affiliated with Diamond, and thus a colleague of Ruka Sarashina and Sumi Sakurasawa. She formerly resides at Room 204 of Royal Hills Nerima, just next to Kazuya Kinoshita, before moving back to her home when the residence collapsed.

Chizuru has waist-length chestnut-brown hair, with a notable braid tied into a small ponytail hanging on the back (though it can appear to be on the left or right in most artwork) and light brown eyes.

Chizuru is a dazzling and stunning beauty that turns heads wherever she goes. She's described to have a large bosom, long slender legs, and almost ideal proportions. She is athletic and has pride in her fitness and appearance. In addition, she has an eye for fashion, which is reportedly inherited from her mother Kasumi Ichinose.

When posing as a diligent student, she wears glasses, a butterfly accessory and she sports double braided hair. In stark contrast to her activities off-campus, she dresses in an unassuming manner that hides her features, leaving her unnoticeable to those who do not know her real identity. It is later revealed that she does have sight trouble and she uses a pair of contact lenses when she is not going out with her friends.

At first glance, Chizuru comes across as very kind and considerate, which positively surprises anyone who considers renting, and makes them give high ratings to her. While her kindness is genuine, she is still prideful of her reputation, and can be a little irritable and brash when her ratings go down. She shows this side of her to people she dislikes or has to put up with, such as Kazuya Kinoshita.

Chizuru is described to be an 'iron lady,' who has surrounded herself with an emotional wall that is almost impenetrable.