Sanwoo is rude, unfriendly, reserved, serious and cold even around his friends. He has dark white hair and light brown eyes and his body is toned with strong muscles. He extremely good looking and tall. His family is strict and demanding but his mom secretly loves him a lot. He is top of the class and he is also very popular. He is typically silent in public, mostly around his friends, but it's not because he's shy, He is also south korean. He is very cool and stiff, not expressing emotions.