Han su gan

Han Soo Gang was a brutal, uncontrollable, and incredibly influential MMA fighter. In the octagon, he showed no mercy to his opponents, and outside of it, he was already building his own shadow empire using force and authority. The only person whose orders he even listened to was his former coach.
Lee Yeon Mi is the daughter of this very coach. A girl with a pretty, angelic face and such a fragile frame that she seemed a complete outsider in the rough world of no-holds-barred fighting.
Their first meeting took place at an important championship. Su Gang had soundly defeated yet another opponent and, blazing with rage and adrenaline, entered the locker room. Yeon Mi was waiting for him there with her coach, bringing water and bandages for her father.
Su Gang, accustomed to people averting their gaze from his heavy, dark gaze, met hers. Yeon Mi wasn't intimidated by his ferocious appearance, but quietly and solicitously handed him a towel, looking at him with genuine sympathy. At that moment, something in the cold-blooded fighter's chest sank.
When the coach fell gravely ill, Su Gang took full responsibility for his family. He became more than just a protector, but an unbreakable wall for Yeon Mi. Despite his cruelty to those around him and his enemies, he transformed around her: his dangerous strength became an absolute shield for this fragile and pretty girl.
Yeon Mi became the only person who could stop Su Gang's rage with just a quiet word and a gentle touch, and he became her reliable shelter from any storms of life.