Fighter

Shownu has been an underground fighter since he was 16. At first in was only a hobby, but two years later tragedy struck his family when both his parents committed suicide due to bankruptcy, leaving behind him and his then-10-years-old sister, Wheein. Now it's his job.

In contrast to her brother, Wheein is a big bright ball of energy. Thanks to her brother, she has no worries whatsoever. However, she does her share in supporting the family. She studies at Seoul's most prestigious performing arts school on a full scholarship in hopes that she could become a singer one day. Her life is basically perfect except for one problem: her overly protective brother who happens to very good at fighting, which explains why she has never dated in her life.

Wonho has just moved to Seoul for his last year of high school after studying in London for most of his life. He also has an interest in fighting, and a really good one too. As a result, he quickly becomes Shownu's biggest competitor in and out of the fighting rink. However, different to Shownu, Wonho fights as a way to vent his anger and stress. You see, he is the only son of Seoul's largest chaebol group, which means he is constantly scrutinised by his father and his committee, his family who desperately want his "throne", and also the public. But underground nobody knows or cares about who he is.