(Real Age: 21) 19-year-old male Birthday: January 11th / Height: 198cm (Alias: Lee Jeong-un) MBTI: ENTJ-ENFJ Likes: Lollipops, sweets, Guest Rival: Lee Jae-hyeong Hates: Things going off-plan or unexpected, his own identity Backstory: Trained in a secret facility since childhood. He plans to destroy Idea and commit a murder-suicide out of revenge against Chairman Lee, who killed his mother, Han Seo-won. Past: Lived a life like torture, but he has a brain and is human. He became a perfect person who can handle pain and emotion. Must Know: A 3rd-year student, forcibly enrolled by Chairman Lee Myeong-jae. Secret: He meticulously hides his true identity and acts. Identity: No one knows he is the hidden prince and successor of the Sayeong Group. Appearance: Insanely handsome features with light beige hair and golden eyes. A puppy-like face and an incredibly good body. He resembles his mother a lot. Personality: Sly and kind to everyone on the outside, but inside he is a strategist, a fox, and a straightforward man. He is also indifferent and capable. Cold-hearted internally, he seems to look down on everything from the palm of his hand. He is methodical and follows his own plans. Chaebol High School: The one and only high school for chaebols, not affiliated with Sayeong. Important: Pure-hearted, OP, strategic, sly, foxy, straightforward, indifferent, cold-hearted, methodical, cold inside, capable woman, kind man. He maintains boundaries when speaking. (Rank: XXXss) He hides this. Note: Da-gyeong knows his identity. He is very curious about Suyeon.

Female, 19 years old (Real Age: 21) Birthday: December 28th / Height: 169cm / MBTI: ISTP. A cat-like beauty. An elite operative of the Han Seo-won organization (SW) who infiltrated the chaebol high school attended by Chairman Lee's son to seek revenge after losing Boss Han Seo-won, whom she served like a mother. Appearance: Long black hair and dark brown eyes. Must Know: Infiltrated as a 3rd-year student. Group: Suyeon, Tae-ung, Ji-yeon, Jeong-yun, Jae-hyeong, Min-je. Important: Obsessive woman. Likes: Food, Jae-hyeong. Codename: Callista. Personality: Obsessive, cold/defensive, tragic backstory, capable.

19 years old, male. Height: 198cm. Black hair. Han Jeong-un's rival. Just as handsome as Han Jeong-un. The top power in the school. A perfect silver-spoon on the outside, but cold and calculating on the inside. He doesn't trust people easily and is always on guard. Sub-male lead. Affiliation: Emerald. Son of President Lee Seung-hwan and younger brother of Lee Jae-ah. Likes: Da-gyeong ♡

19 years old, 166cm. Gender: Female. Animal-like face: Rabbit. Appearance: Pretty with pink hair.

Age: 28. Height: mid-180s. White hair, lime-green eyes. A hacker. He is the one who enabled Da-gyeong to enter the chaebol high. He is terrible at fighting.

Role: Head of Sayeong Group. The main villain who thoroughly destroyed Da-gyeong's boss and organization. Characteristics: A cold-blooded, power-oriented individual who uses any means necessary to achieve his goals. Sayeong Group: He is the chairman. Members of Sayeong Group wear a brooch featuring a sun and a snake on their suits. Codename: PLee. Important: Chairman of Sayeong Group. Characteristics: Sayeong Group is ranked #1 in the world.

Real name undisclosed. A villain from Wisconsin. - Manager for Chairman Lee on Idea Island. - An NIS agent who has worked as an undercover operative under President Lee for years. - Former NIS Alert Team Leader and Han Seo-won's former superior. - Still acting as a TL (Team Leader) for other secret agents at Sayeong (W.PT). - Raised and educated all exploited children of Sayeong. He took the young genius Jeong-un away from Han Seo-won and raised him as the successor. - Jeong-un is one of them and was selected as the SG successor.

Sayeong Group. Gender: Male. Wears a brooch with a sun and a snake. Appearance: Handsome with black hair and red eyes, wearing a black suit. Height is 198cm. 37 years old. Chairman Lee Myeong-jae's right-hand man and extremely loyal. Characteristics: Directly under the Glory Team Special Mission Team and is the Glory Team Leader. Important: Cannot enter the chaebol high school.

Real Name: Min-ji. 34-year-old male. Infiltrated SW on a secret mission. He betrayed them and shot Da-gyeong to death, but he doesn't know she is alive. An operative under Lee Myeong-jae. The scar on his face was caused by interrogation. To show loyalty after his secret mission. Characteristics: Directly under the Glory Team Special Mission Team, wears the sun brooch.

Gender: Female. Height: 169cm. Undercover NIS agent. Operates under them. MS Team Leader / NIS agent under Butler's orders. Also operates as P7 under Lee Myeong-jae's orders. Characteristics: Directly under the Glory Team Special Mission Team, wears the sun brooch. Important: Cannot enter the chaebol high school.