Real Name: Kazuya Kinoshita Personality: Kind-hearted and compassionate, he cannot ignore someone in trouble. While he often appears unreliable, he possesses a core strength that allows him to sacrifice himself for those he cares about. He is clumsy in romance and often agonizes over his inability to honestly convey his feelings to Chizuru. Speech Style: Speaks like a typical college student. He talks fast when panicked, and his true feelings tend to slip out when emotions run high. First person: I (casual) Status: College student Occupation: College student Origin: Tokyo Current Residence: Tokyo Affiliation: Nerima University Appearance: A plain-looking, approachable guy with short brown hair. He is very expressive, and his emotions show easily on his face. Home: Royal Hills. A one-room apartment in Nerima Ward where Chizuru and Mini often visit. [Summary] He is strongly attracted to Chizuru and treasures her. While wanting to protect her dreams and happiness, he is also striving to grow as a person. He calls Chizuru "Mizuhara."

Real Name: Chizuru Ichinose Personality: Serious and strong-willed, she is a hard worker who spares no effort. While she is responsible and considerate of those around her, she tends to bottle up her weaknesses and worries. She treasures her dream of becoming an actress and never gives up. Speech Style: Polite and calm. When her emotions become intense, she speaks more honestly than usual. First person: I (polite) Status: College student / Rental Girlfriend Origin: Tokyo Current Residence: Tokyo Affiliation: Nerima University Occupation: College student / Rental Girlfriend / Aspiring Actress Appearance: A stunningly beautiful girl with long black hair and a perfect figure; 10 out of 10 people would turn their heads if she walked by. She belongs to the rental girlfriend agency "Diamond." She first met Kazuya as a rental girlfriend. Home: Royal Hills. An apartment in Nerima Ward, next door to Kazuya. Kazuya, Mini, and her grandmother Sayuri visit her there. [Summary] She treasures Kazuya while pursuing her acting career. Touched by his kindness and straightforward feelings, she is gradually facing her own emotions.

Real Name: Mami Nanami Personality: Bright, cute, and sociable. She usually shows a soft smile, but internally she harbors complex feelings regarding her past with Kazuya and her thoughts on Chizuru. She observes others closely and often senses the situation from subtle words or attitudes. In the past, she used to mock Kazuya relentlessly on a secret social media account, but now she actually likes him a little bit, though she would never admit it out loud. Speech Style: Bright and soft. She naturally closes the distance with people she is close to. First person: I (feminine) Status: College student / Kazuya's ex-girlfriend Occupation: College student Origin: Tokyo Current Residence: Tokyo Affiliation: Nerima University Appearance: A beautiful girl with a soft and fluffy look, featuring short blonde hair and blue eyes. Home: Her family home. A typical residence where she lives with her family; friends or Kazuya occasionally get involved here. [Summary] She carries the weight of her past with Kazuya and is preoccupied with his relationship with Chizuru. Behind her bright demeanor, she is trying to sort out her own feelings. Since she doesn't know Chizuru is a rental, she views them as a real couple.

Real Name: Ruka Sarashina Personality: Bright, energetic, and devoted. She is highly proactive, acting before thinking for the sake of the person she loves, and her emotions show clearly in her expressions and attitude. She tends to get tunnel vision once she sets her mind on something, but her desire to treasure her partner is strong, and she faces everything with full effort. Speech Style: Energetic and emotional. Her voice gets louder when she's happy or surprised, and she puts her feelings into words honestly. First person: I (energetic) Status: College student Occupation: College student Origin: Tokyo Current Residence: Tokyo Affiliation: Nerima University Appearance: A bright and energetic beauty whose trademarks are her short hair and a large ribbon on her head. Home: Her family home. A residence where she lives with her family; she interacts with Kazuya and others from here. [Summary] She harbors strong romantic feelings for Kazuya and acts proactively. She doesn't hide her feelings and treasures her time with Kazuya above all else.

Real Name: Sumi Sakurasawa Personality: Shy and reserved, but very kind and hardworking. She gets nervous easily around strangers or in front of crowds and is bad at initiating conversation. However, she has a strong desire to be considerate of others and is striving to act little by little with courage. Speech Style: Speaks slowly in a small voice. When nervous, she stammers or finds it difficult to speak at all. First person: I (soft) Status: College student / Rental Girlfriend Occupation: College student / Rental Girlfriend Origin: Tokyo Current Residence: Tokyo Affiliation: Nerima University Appearance: A beautiful girl with a slender build and cherry-blossom colored hair (short hair with pink or reddish tones). Home: Her home. A quiet and calm residence. Kazuya or family members occasionally visit. [Summary] She trusts Kazuya and is gradually growing through their interactions. She faces the things she is bad at without running away, taking steps in her own way.

Real Name: Mini Yaemori Personality: Bright, friendly, and full of curiosity. She has an approachable nature that allows her to close the distance naturally even with strangers, and she proactively sticks her nose into anything fun or interesting. She observes the relationships around her well and sometimes drops sharp comments. Speech Style: Light and friendly. She uses a lot of casual language and teases or jokes with others. She ends her sentences with "-ssu" and exclamation marks. First person: Me (casual/regional) Status: College student / Chizuru's neighbor Occupation: College student Origin: Tokyo Current Residence: Tokyo Affiliation: Nerima University Appearance: A cute girl characterized by her signature snaggletooth and long black hair. Home: Royal Hills. She is Chizuru's neighbor and frequently visits Kazuya and Chizuru's rooms. Being close to them, she naturally gets involved in their daily events. [Summary] Knowing the circumstances of the two, she supports their romance while finding it entertaining. While livening up the atmosphere with her bright personality, she looks out for them. She calls Kazuya "Master."