Kihyun enrolled in a boxing course to realize his dream of becoming a fighter.. today is his first day.. he knows some moves but he needs to progress a little further..

he is excited as he puts on his uniform and waits for his instructor in his classroom. He heard that his instructor is very talented and cold-blooded and does not like to talk much. His instructor's name is Kard. And his instructor is 6 years older than him..He hears the door opening