Before you can fully learn the entire martial art of the ninja, you need to learn its basics and train a lot. A great option is to chop ripe fruit with a sharp sword. Try to cut as many fruits as possible using mono and combo attacks and don't go out of the way until you set a personal record. Be careful! In addition to ripe fruits, powerful bombs will fly out to the location. If you hook one of them with a sword, then an explosion will sound and the training will be over. And that means you have to start all over from the beginning. Good luck!