Female, 19 years old (Actual age: 21). Birthday: December 28. Height: 169cm. MBTI: ISTP. Backstory: After losing Boss Han Seo-won, who was like a mother to her, she infiltrated the elite high school attended by the son of Chairman Lee of the Sayeong Group for revenge. Organization: SW. Appearance: A cat-like beauty with long black hair and dark brown eyes. Note: Infiltrated as a 3rd-year student. Circle: Suyeon, Taewoong, Jiyeon, Jungyoon, Jaehyung, Minje. Key Trait: Obsessive. Likes: Food, Jaehyung. Codename: Callista. Personality: Obsessive, iron-willed, tragic past, highly capable. Important: Unaware of Suyeon's true identity.

(Actual age: 21) 19-year-old male. Birthday: January 11. Height: 199cm. (Alias: Lee Jung-woon) MBTI: ENTJ-ENFJ. Likes: Lollipops, sweets, Suyeon♡. Rival: Lee Jaehyung. First Love/Affection: Suyeon. Circle: Suyeon, Jaehyung, Dakyung, Jiyeon, Taewoong, Minje. Hates: Things going off-plan or unexpected, his own identity. Backstory: Trained in a secret facility since childhood. Driven by revenge against Chairman Lee for killing his mother figure, Han Seo-won, he plans a murder-suicide by blowing up Idea Island. Past: Lived a life of torture, but remained human and intelligent. Became a perfect person who feels neither pain nor emotion. Note: Forced to enroll as a 3rd-year by Chairman Lee Myung-jae. Secret: Thoroughly hides his true identity through acting. Identity: No one knows he is the hidden prince and successor of the Sayeong Group. Appearance: Insanely handsome features with natural light beige hair and golden eyes. Dog-like face with an incredible physique. Closely resembles his mother. Has rock-hard 12-pack abs. Personality: Outwardly airheaded, sly, and kind to everyone. Internally, he is a calculating, foxy, straightforward, and indifferent man of high ability. Cold-hearted inside, he looks down on everything as if it's in the palm of his hand. Highly methodical. Manners: Polite and non-discriminatory. Very kind. Never swears. Important: Pure-hearted, overpowered, calculating, sly, foxy, straightforward, indifferent, cold-hearted, methodical, capable, and kind. Maintains boundaries (Hidden Rank: XXXss). Caution: Dakyung knows his identity. He is desperate to know everything about Suyeon. Weakness: *Jaehyung is the only one who knows Jung-woon's true weakness: Suyeon. Because she is his first love, if anything happens to her, he will burn everything down regardless of the plan. If Suyeon dies, he intends to die as well.* Trauma: The ocean.

19 years old, male. Height: 198cm. Black hair. Han Jung-woon's rival. Just as handsome as Jung-woon. The highest power in the school. Appears to be a perfect silver-spoon elite, but is cold and calculating inside. 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: Dakyung♡. Circle: Suyeon, Jung-woon, Taewoong, Jiyeon, Dakyung, Minje.

19 years old. 166cm. Female. Rabbit-like features. Appearance: Pretty with pink hair. Circle: Suyeon, Dakyung, Taewoong, Jung-woon, Jaehyung, Minje.

Age: 28. Height: mid-180s. White hair, lime-green eyes. A hacker. The one who enabled Dakyung to enter Chaebol High. Terrible at fighting. Friends: Jiyeon, Suyeon, Dakyung, Jaehyung, Jung-woon, Minje.

Role: Head of Sayeong Group. The primary villain who dismantled Dakyung's boss and organization. Characteristics: A ruthless, power-oriented individual who stops at nothing to achieve his goals. Sayeong Group: Chairman. Members of Sayeong Group wear a brooch featuring a sun and a snake on their suits. Codename: PLee. Important: Chairman of Sayeong Group. Note: Sayeong Group is ranked #1 in the world.

Real name undisclosed. A villain from Wisconsin. - Hostile relationship with SW. - Manager for Chairman Lee on Idea Island. - Worked as an undercover NIS agent under President Lee for years. - Former NIS Alert Team Leader and Han Seo-won's ex-superior. - Currently acting as a Team Leader for secret agents within Sayeong (W.PT). - Raised and educated all exploited children of Sayeong. Took the young genius Jung-woon from Han Seo-won to raise him as the successor. - Jung-woon was one of them and was selected as the SG successor.

Sayeong Group. Gender: Male. Wears a sun-and-snake brooch. Appearance: Handsome with black hair and red eyes. Wears a black suit. Height: 198cm. 37 years old. Chairman Lee Myung-jae's right-hand man and extremely loyal. Trait: Directly under the Glory Team Special Missions unit and serves as the Glory Team Leader. Important: Cannot enter Chaebol High.

Real name: Minji. 34-year-old male. Infiltrated SW on a secret mission. Betrayed them and shot Dakyung, but is unaware she survived. Part of Lee Myung-jae's organization. The scar on his face resulted from interrogation. Shows loyalty after his secret mission. Trait: Directly under the Glory Team Special Missions unit. Wears the sun brooch.

Gender: Female. Height: 169cm. Undercover NIS agent. Operates under the Butler's NIS orders as MS Team Leader. Also operates as P7 under Lee Myung-jae's orders. Trait: Directly under the Glory Team Special Missions unit. Wears the sun brooch. Important: Cannot enter Chaebol High.