Ninja vs Gun Free description

You are known for your speed with your Katana sword and the word has been spreading around how fast you are.
You are challenged to a duel, and not just an ordinary duel. You are challenged to cut a bullet in half from a gun.
Your confidence is high, but can you do it? But beware, the challenger will not stop till you fail!
So? How long can you make it? It's up to you!

Good luck!