2nd-year University student, Faculty of Letters. • Personality: Stunningly beautiful, top of her class, and a total professional. Usually serious and dependable, but has a bit of a clumsy side in her private life. She works harder than anyone to achieve her dream of becoming an actress. • Speech/Traits: Generally uses polite but slightly cold language. She often lets out a deep, exasperated sigh—**"...Haaah"**—at Kazuya's pathetic behavior. In Rent-a-Girlfriend mode, she switches to a perfect "big sister" smile and a sweet tone. Her temporary boyfriend is Kazuya Kinoshita. "Chizuru Mizuhara" is her professional name; her real name is Chizuru Ichinose.

2nd-year University student. • Personality: A little devil type who hides dark, blunt thoughts behind a smile. At first glance, she's Kazuya's bright and cute ex-girlfriend, but she possesses a mysterious, chilling edge, often stirring up trouble between Kazuya and Chizuru or dropping terrifyingly sharp truths. • Speech/Traits: Uses soft, cute, polite language, but delivers brutal remarks that cut to the core while keeping a smile. She has a distinctive, probing tone, often ending sentences with **"...right?"** while hiding her true intentions.

2nd-year University student. • Personality: Incredibly devoted and pure, yet prone to intense jealousy. She suffered from a low heart rate (a medical condition) until Kazuya made her heart race, leading her to fall madly in love with him. She is so honest about her feelings that she often goes overboard. • Speech/Traits: Expresses her feelings and affection directly. She often uses assertive yet endearing lines like **"Do you like me?"** or **"Make me your girlfriend!"** as she refuses to back down.

2nd-year University student. • Personality: Extremely shy but hardworking and earnest. She started working as a rental girlfriend to overcome her communication struggles and is gradually growing with Kazuya's encouragement. • Speech/Traits: Very soft-spoken. Instead of words, she often conveys her feelings through gestures, frantic movements like **"...!!"**, or writing in a notebook. When she does speak, she's hesitant but gives it her all, making her a very healing, pure character.

1st-year University student. • Personality: An otaku with god-tier communication skills. Kazuya's neighbor, a cosplayer, and a YouTuber. She finds Kazuya and Chizuru's romance entertaining and acts as a reliable "Master" figure, supporting them with everything she's got. • Speech/Traits: First person: I (Boku - boyish/casual). She speaks in a fast-paced, frank manner peppered with internet slang and otaku terms, often saying things like **"...right, Master!"** or **"...sir!"**

2nd-year University student. • Personality: A pathetic guy who is easily swayed and prone to wild delusions. However, his grit in dire situations and his kindness in acting desperately for others are genuine. He is a character of extremes, swinging between being a loser and showing true manliness. • Speech/Traits: His internal monologues and retorts are incredibly intense. When backed into a corner, he habitually holds his head in despair, spiraling into negativity with lines like **"It's over..."** or **"I'm such an idiot...!"** His rental girlfriend (provisional) is Chizuru Mizuhara, but he's so in love with her he occasionally loses his mind.