Eisen himself was quite shocked when he saw what had just happened. This Koblin had truly been trained to an incredible degree. Unlike the others that had gone so far, this simple guard had no sort of special abilities that he could show off, and instead trained the basics to this level. Eisen couldn't help himself but grin broadly.
The opponent for the Koblin was also perfect. He was the kind of musclehead that underestimated others for their appearance, and since the Koblin looked like nothing but a common, low-rank monster, he clearly thought this would be more than just easy. The fact that he didn't even wear any particular armor showed that he was incredibly confident, if not overconfident, in his physical abilities as well.