Koi saw that Coal was approaching the frozen lake, obviously about to do something. The seal had finally worn off of his leg and Koi jumped through the air using chakras to do so and landed behind the others.
He watched in awe as she demolished and then liquefied the entire lake. This was the part they had all been waiting for and Koi wasn't going to stand around and wait. He had embarrassed himself once already, he was going to show them up this time. Koi studied the water and saw that he would have to constantly adjust the amount of chakras in order to stay afloat.
Koi already had some experience in adjusting the amount of chakras he focused from jumping up and down the cliff. With this in mind Koi moved forward and took a step out onto the lake. He fell a few inches into the water and his feet began to feel the sting of the hot water. Koi cringed his face and concentrated harder on the fluctuating movement of the water until he was standing on top of the water.
Having done this Koi began to think about how exactly the standing on water thing really worked. He first observed the water itself. He squatted down and put his hand on the surface and concentrated some chakras there and observed how the water was none reactive. Koi peered deep into the water and thought more on the reason for the need for continuous change in chakras.