Habara is a second-year high school student of Sanada West High School. She is a member of the Funky High School Girls and is close friends with Yanagi and Ikushima, although they all deny that they get along well. She is also an acquaintance of Yassan, and has an older brother. Among the Funky High School Girls trio, she is the one with most common sense and acts as the straight man, primarily because they always hang out at her house. Despite this fact, she is naively ignorant when it comes to fighting and display of her monstrous physical strength which is why everyone, including her friends, fears her. She is insecure with her flat chest.

It is hinted that she has a crush on Karasawa which stemmed from her mistaken notion that he likes her. In the end of the manga, they finally became even when she suffered a head injury in rescuing Karasawa from falling down the stairs.