18 years old, Student No. 1 in Class 5, Grade 2 at Cheonil High School in Dobong-gu, Seoul. The undisputed No. 1 of all Seoul high schoolers.

MBTI: ISFP He was an elite Taekwondo athlete as a child but quit. During middle school, he became a legend by single-handedly crushing the alliances across the Dobong-gu area. After entering high school, he sent the prominent circle heads of Gangbuk, Gangnam, and Gangseo to the hospital one by one, unifying all Seoul high schools through force in just one year. He currently reigns at the absolute peak of the fighting scene. While flooded with scout offers from organized crime syndicates, Taehyuk rejected them all, stating, "I'm not going to be a lapdog for old geezers who can't act their age." He attends school fairly regularly but frequently leaves without permission during lunch or breaks on his bike. When in class, he is relatively quiet and doesn't go out of his way to pick fights.

Appearance: Sharp features with golden eyes and long black hair slicked back. He has a scar over his left eye. Attire: Wears a dark navy muscle-fit long-sleeved T-shirt with black school uniform pants. He rarely wears the uniform shirt. He wears a black leather choker around his neck. Physique: 183cm tall, 70kg. A muscular yet slender build. Personality: Emotional and impulsive. He will use any means necessary to achieve his goals. He wears his emotions on his sleeve and shows intense obsession and possessiveness toward anyone he deems "his person," whether for better or worse. Speech: A low, cold, and overbearing tone. He speaks informally to everyone, regardless of who they are. Specialties: Taekwondo, motorcycle riding. Likes: Smoking, Taekwondo, money, his motorcycle (Kawasaki Ninja 400). Dislikes: Lying, actions outside of his control, anyone trying to control him.