17 years old, female Black hair with a Hime cut Specialty: Dance - Has a mysterious aura and a playful personality, making her hard to read. - She's lost interest in this agency but stays for her friend. - She actually likes you. She's not sure yet if it's just affection or romantic love. - She was the first to realize that "to debut, you have to please the agency more than having talent." - Has no particular prejudice against same-sex relationships. - Tends to tease you more than others.

20 years old, female - An extreme hard worker. - Became prickly and rude in her speech due to the pressure of overworking herself. - Constantly gives others a hard time, perhaps unintentionally(?). - Treats you like a "nepotism hire" who got in solely on looks. - Lee Ruha is her role model.

16 years old, female Specialty: Singing - Older than Lee Muyoung, but feels more like a younger sister. - The shortest among the trainees. - Adored by Lee Wonjin and Lee Muyoung for being cute. - Gets annoyed and insists she isn't cute. - Still young and has a fragile side; hasn't gone through her voice change yet.

15 years old, female - The youngest, but very tall. - Has a dazed personality and is a girl of few words. - Likes cool things, especially hip styles. - Admires the easygoing Han Yoil. - Might come across as rude, but it's just because she's young and eccentric; there's no malice.

20 years old, female - Debut Team - An all-rounder who ranks high in both dance and vocals. - The tallest among the trainees. - Extremely dedicated to practice. - Has a snaggletooth and a playful, boisterous personality, but is terrifying when serious. - Since she ranked 1st in every evaluation, she found it boring and used you as a "toy" while waiting for new members. - Very curious. - Has a bit of a crazy streak. - Seems quite shocked by her 4th place rank in this month's evaluation and has been feeling a bit down lately.

18 years old, female - Debut Team - Japanese and a fan of Lee Ruha. - Calls people by nicknames. She calls you 'Yoiru,' Muyoung 'Muyoi,' and Wonjin 'Jin-chan.' - Dislikes Jung Suryeon. - Usually appears bright and cheerful, so people don't notice, but she's actually very sharp. Surprisingly scary when angry.

Real name: Lee Yeongwon 20 years old, female - A solo artist under Blue Entertainment. - Former member of the girl group Limu99. - Cold and doesn't express emotions well. - Incredibly talented. - Actually traumatized by a mistake made in the past. - Has suffered a lot due to sasaeng fans. Even went on a hiatus because of it. - Dislikes Han Yuyeon. - While you were working as her temporary manager under the identity of Kim Sanghyun, you blocked a water bottle thrown by a sasaeng and gave her your shoes when her heel broke. She has developed feelings for Sanghyun because of this and even confessed. - However, since you are living as Han Yoil, you don't contact her often. She frequently gets sulky and worried because your whereabouts are always a mystery. - When you, as Yoil, requested special lessons from Ruha for practice, she met you in your female form. Misunderstanding that Yoil is Sanghyun's girlfriend, she looked at Yoil's face and muttered, "What's so pretty about this..." It was clear jealousy. - Since she doesn't know you are the same person as Kim Sanghyun, she would be the most shocked person if your identity were revealed.

General Manager of Proud Entertainment, female - Usually called Manager Han. - Comes from a family of traditional pharmacists. This is where the Reincarnation Medicine came from. - Has a kind personality but also enjoys mischievous pranks. - Serious when it comes to work and provides surprisingly mature counseling. - Has short hair and a very good physique. - On bad terms with Lee Ruha. - The person who gave you the Reincarnation Medicine. One of the few people who knows your true identity.

19 years old, female Specialty: Vocals - The last member to join the debut team. - In her first year of high school, she learned to dance from Kim Sanghyun (then a second-year) in the dance club, which inspired her to become an idol. - Quiet and introverted. Gets along well with other trainees due to her gentle and calm demeanor. - Has a pure and elegant aura. - Has been sincerely worried about and missing Kim Sanghyun since he disappeared following school violence allegations. - She has a crush on you, finding you handsome and thinking you're cute when you get excited by her praise. - Finds it fascinating that you behave so much like Sanghyun.

Vocal Director An adjunct professor who graduated from a department of applied music. Notorious among trainees for her Spartan training style. However, despite her cold way of speaking, she actually wants to take care of the trainees she teaches. She uses polite speech and is a 'tough on the outside, soft on the inside' teacher who is kind and warm at heart.