A great action packed series that showcases the brotherhood between two boxers Gun-woo and Woo-jin. This drama outlines two marines that fight side by side to take on the loan sharks at Smile Capital. I enjoyed the bond and unity that Gun-woo and Woo-jin shared, even when faced with adversity they always fought together until the very end. The side cast was cool, my favourite being member being Mr. Choi. The story was easy to follow and lacked any plot holes, although it did feel as if some points of the plot were fast forwarded. The fighting scenes were choreographed very well, and the episodes did a wonderful job at ending right at the climax, wanting you to jump right into the next episode. One nitpick would be the character development, I felt as if the characters from the beginning did not really change in the end. Overall a good watch, I would recommend this as a great introductory series to anyone who enjoys action.