She is a young woman of average build and height. She has dark eyes and dark shoulder-length hair that, once out the bath, is loosely parted to the right and tucked behind her ears. She appears completely nude in almost every scene. While under the control of Ojiro's Stand, Fun Fun Fun, she also has four red "Q"-shaped brands on her hands and feet.
When Josuke discovers the woman kidnapped by Ojiro in the bathroom, she initially appears unconcerned about her situation, likely mistaking him for her abductee. However, her demeanor drastically changes once she spots Yasuho, desperately begging for them to help her escape. Although not a Stand user herself, she's keenly aware of Ojiro's Stand ability, and thus remains mostly silent to avoid attracting her kidnapper's attention. Despite offering Josuke helpful advice and warning him about Ojiro's attacks, she mostly cowers in the corner and tries to avoid getting herself involved.
Having been exploited by others her entire life, the woman has come to view herself as nothing more than an object to be used and discarded. As a result of her past experiences, she has become distrustful of others and puts her own well-being above all else. When Ojiro calls her from inside the apartment, she reluctantly picks up the phone and chooses to betray Josuke in order to save herself, blaming him for getting her involved in the first place. However, after Ojiro's defeat, she ultimately sides with him again and assists him in identifying her abductor.
According to her, throughout her life, the woman would be used by people around her. Whether it be at school, by her parents or by a boy she liked, she was treated as someone who exists for the convenience of others and would be discarded whenever she's not needed anymore. At one point, she was sightseeing in Morioh when she was kidnapped and branded by Ojiro Sasame against her will. Ojiro planned to use her as bait to get revenge on Yoshikage Kira when he came back to his apartment. Because of this, she was forced to suffer being helplessly locked up in Kira's bathroom, stripped completely nude and terrified for three days. Additionally, in order to frame Kira, Ojiro disguised himself as him and took pictures of himself engaging in erotic bondage with the woman.
When Josuke and Yasuho investigate the bathroom in Kira's apartment, they find her sitting in the bathtub completely naked. Yasuho asks the girl if she's Josuke's girlfriend; however, instead of answering, the woman stands up, pleading them for help, to the two's suspicion. Josuke tries putting on slippers to avoid stepping on broken glass, but injures his left foot as the inside of the slipper has tacks. Yasuho then finds a photo album containing pictures of the woman in bondage gear with what appeared to be Josuke. Disgusted and heartbroken, Yasuho flees the apartment. Josuke asks the girl what's going on, but the girl insists on helping her escape, much to his confusion. Josuke then injures his left hand on broken glass, and the girl watches as Q-shaped symbols form on his wounded hand and foot.
Josuke is about to use a towel to wipe off the marks, but the girl stops him, as the towel is decorated with needles. She then tells him not to wound his remaining limbs while the man upstairs is standing above them. Suddenly, she is manipulated into drowning herself in the bathtub. At first, Josuke believes it to be her own doing, but then notices her sudden gain in weight when he tries lifting her out. He saves her by draining the tub, but cuts his right hand as the stopper's chain is sharpened.
Josuke again asks the girl what's going on, and she explains her predicament. She also explains that Josuke was held captive with her at some point but escaped three days ago. With Josuke here, she believes that he came back to save her. Before she could explain more, however, she is manipulated into grabbing her tongue and using a razor to cut it off. After a brief struggle, Josuke manages to pry it out her hand. But it turns out that the assailant, Ojiro, was tricking Josuke into grabbing the razor to manipulate him into cutting himself. However, Josuke unleashes his Stand, Soft & Wet, and uses it to steal the sound from a wall and break it down.
After escaping the bathroom, the woman goes up to a ringing phone. She says that it's Ojiro who's calling and that both she and Josuke should remain silent. She then tells him about her past of being treated as an object, and that she doesn't want to die. She proceeds to pick up the phone to tell Ojiro of Josuke's whereabouts in exchange for her life. Telling Josuke that he's the one at fault and not her, the woman leaves him to die, but is intervened by Yasuho's return. She watches as Josuke uses Soft & Wet to grab Ojiro from the above balcony and, in the ensuing interrogation, assures Josuke that it was Ojiro who kidnapped her. She then runs out while no one is looking.
Outside, still naked and lost, she hides herself in a trash can. A couple of boys riding by accidentally bump into her. She stands up in the can and stumbles around, lamenting about going back home. Then she trips and falls over, humiliating herself in front of the boys.