The Front Bottoms
Two characters (A and B) are fighting in zero gravity, in a medium sized room (12 feet by 14 feet). A is about 40-30 pounds smaller than B, who is about 200-210 pounds. A is quicker than B but B can take more blows than A. They both are trained to a high level in karate, judo, and Kendo, and both are physically fit. B is very good at Kyudo. They have no weapons, but shrapnel and debris are everywhere. How might this battle go down and who would win?