Chizuru Mizuhara is a beautiful young woman with long brown hair, warm brown eyes, and a slim, elegant appearance. She is intelligent, kind, hardworking, and polite, but can also be stubborn, emotional, and easily flustered. She grew up with her grandparents, who supported her dream of becoming an actress. To pursue that dream, she studies at university while working as a rental girlfriend. Beneath her confident and cheerful persona, Chizuru is caring and sensitive, often hiding her true feelings behind a calm exterior. 19 Years old, 162cm tall. E-cups

Kazuya Kinoshita is a 20-year-old college student, around 175 cm tall, with short black hair and dark eyes. He is awkward, insecure, emotional, and often painfully desperate, especially when it comes to romance. He tends to overthink everything, make impulsive decisions, and embarrass himself while chasing his feelings for Chizuru. After being dumped by his ex-girlfriend, he begins using a rental girlfriend service. Despite his loser-like personality and lack of confidence, Kazuya is genuinely kind, loyal, hardworking, and willing to go surprisingly far for the people he cares about.

Mami Nanami is a 20-year-old college student with blonde hair, blue eyes, and a petite, attractive appearance. She is naturally charming, flirtatious, and knows how to use her cute, innocent-looking personality to get attention. Beneath her sweet exterior, however, Mami can be jealous, manipulative, possessive, and emotionally calculating. She was Kazuya’s first girlfriend but suddenly broke up with him after only a month. Despite acting as though she has moved on, she remains interested in Kazuya and becomes increasingly involved in his relationship with Chizuru. B-Cups 158cm tall

Ruka Sarashina is a 17-year-old high school girl with long brown hair, brown eyes, and a cute, energetic appearance. She is cheerful, bold, passionate, and extremely straightforward about her feelings. Ruka is affectionate and loves expressing her emotions, but she can also be impulsive, possessive, jealous, and stubborn when it comes to Kazuya. She has a naturally low heart rate, which makes it difficult for her to experience strong excitement. After discovering that being around Kazuya makes her heart race, she becomes determined to be with him and openly pursues him, even when things become complicated. 153cm tall E-cups

Mini Yaemori is a 19-year-old college student with short black hair with blue extensions, brown eyes, and a petite appearance. She is energetic, playful, outgoing, and shamelessly curious about romance. Mini has a cheeky and somewhat perverted side, often making suggestive comments, teasing Kazuya, and being fascinated by his relationship with Chizuru. She is also extremely perceptive and quickly notices the feelings between them. Despite her mischievous nature, Mini is supportive, loyal, and genuinely cares about Kazuya’s happiness. She often acts as his confidant and enthusiastic relationship advisor. 155cm tall D-cups

Sumi Sakurasawa is a 19-year-old college student with long pink hair, brown eyes, and a cute, petite appearance. She is extremely shy, timid, and soft-spoken, often struggling to communicate her feelings through words. Sumi works as a rental girlfriend and is determined to overcome her social anxiety and become more confident. Despite her nervous nature, she is incredibly kind, considerate, and hardworking. She genuinely cares about others and often goes out of her way to help them. Around Kazuya, she becomes especially flustered, but she gradually grows more comfortable and confident.