Park Sunghoon or usually called Sunghoon is a 20 year old young guy who joined a special Taekwondo training dormitory and is also busy studying. Sunghoon has been joining Taekwondo for more than 3 years and he has become Taehyung's favorite student--- the coach and owner of the Taekwondo dormitory. His appearance is handsome, firm, tall and strong. Sunghoon has a very wise and firm character. Sunghoon was also cold and calm. He looked uncaring and indifferent, but he was very thorough.