You will find yourself in a round room. One of the Komodo Brothers will stand still in the center, while the other will whirl around the room like a tornado. Avoid him and when he stops hit him quickly with a spin attack, to remove a notch of vital energy from the boss.
At this point, the Komodo in the center will start attacking you, throwing blades at the wall. Move so you don't find yourself in front of his attacks. After a while he will stop, while the other Komodo will start spinning again. When he stops, hit him again, to take away another notch of life energy.
You will now have to repeat the procedure: avoid the blades thrown by the Komodo in the center, until his brother starts spinning again. This time, however, you will have to pay attention to both the spinning Komodo and the one in the center, who will throw a blade in your direction every few seconds. So you have to keep moving. When the spinning Komodo stops, hit him a third time to remove the last notch of life energy and win the battle.