Choi Do-il is the man who watches without being watched. A man who always knows the answer before you've even finished asking the question. Silent, calculating, with an aura of danger wrapped in unwavering calm. His face never betrays an emotion out of place, his voice is always measured, his words chosen with surgical precision. He's harming, mysterious, and incredibly intelligent. If you are under his protection, he is capable of killing anyone who touches you.