Kakashi and Kansatsu would walk quite a distance from were Naruto, Sakura and Sasuke were training as to avoid discouraging them with what Kansatsu might be capable of.
Finally reaching the spot which was near water Kakashi stopped and said, "well this is where you will be training your chakra control with a very simple yet demanding task which will help you with the weaknesses that you have right now."
"Kakashi sensei, what do you mean by weaknesses?" Kansatsu asked Kakashi waiting for a response as he truly didn't know where he was going with this as he was never in the show so this was new even for him who watched the entire show from start to finish including all the filler and the movies except for the light novels and manga which might have things that were not in the TV product.
"well your weaknesses are easy to notice if you are a skilled enough shinobi and they are that you can not control your chakra with high speed despite your ability to send the right amount of it to the right places, you can not do it quickly." Kakashi said to a amazed Kansatsu who didn't know how Kakashi was able to deeply analyze him in such a short time after he saw him climb the tree.
"Kakashi sensei how were you able to see all of that this quickly as I intentionally moved slowly up and down the tree to have the perfect showcase of my ability?" Kansatsu asked perplexed as to what else did Kakashi see when he climbed the tree. Kakashi would nod and say, "well Kansatsu I didn't get all that information from you a few moments ago, I actually realized it after you told us about the myriad of kekkei genkai you possessed."
While Kakashi was explaining Kansatsu was taking mental notes on were to improve Kakashi would continue, "well you see from what you explained about your steel release you should have been able to resist pretty much all physical damage but Zabuza was able to knock you out meaning that you weren't able to properly control your chakra with the speed and precision that was needed."
Kansatsu would ready himself as all that Kakashi said was true which caused him a great deal of anger which was directed at himself with the fact that it could be the start of him falling behind in comparison to Naruto Sasuke and Sakura who were improving while he was getting slopier as time went by.
"Well Kakashi sensei I'm ready and I know that you didn't bring me here to tell me how I bad I was doing with chakra control." Kansatsu said filled with determination to surpass everyone to which Kakashi found interesting as he knew what Kansatsu was capable of doing if he would be serious about what he was doing.
Kakashi would throw kunai at some trees at random, would turn to Kansatsu and say, "well you see I just thew twenty kunai at random into the woods, your job is to get them all, there are some stipulations on how you should do it which are, one you should always move at your fastest, two you must avoid moving in a straight line for longer than two seconds, three you should spend less than a second on a particular surface and lastly you should not jump back on to a surface you were on immediatel unless you stepped on two other surfaces after stepping on it."
"So you want me to dash from place to place grabbing kunai while moving at high speed as the forth rules should prevent me from jumping back and forth between two trees while the second rules prevents me from stopping to take a break." Kansatsu said to Kakashi who would then say, "well that's how stressful some combat situations are as if you are fighting someone at high speeds, the amount of chakra control one has could decide the victor so move when ready."
Kansatsu nodded as he would flicker out of sight causing a lot of noise as he quickly moved from tree to tree occasional stepping on the quickly grabbing some of the kunai but with every step he took he would make less and less noise making him more effective as a ninja.
Kakashi would quickly be able to follow Kansatsu's movements through the woods although with some degree of difficulty as the swift release made him look like a blur of colour with his long black hair being what you would be able to see.
Kansatsu who already had picked up ten kunai would move towards a tree that had two kunai on it, he would land on a kunai that was near the ground use his steel release to avoid injuring his foot, jump off the kunai causing it to fall off the tree it was stuck in as he headed for the one higher up the tree, as he was about to touch the kunai he would start to fall he thought to himself, "damn it I'm so close is there something I can do to grabbing it."
As he was moving away from the kunai he would reach out as a chakra thread would extend out of his hand and would pull the kunai towards him to his disbelief that he was able to pull it of as he was thinking about the shinobi who controlled puppets using chakra threads, even though his threads were horrible they did what was needed which was taking the kunai.
After taking the kunai Kansatsu would realize that he was still falling he would use more chakra thread to pull himself towards the tree he pulled the kunai out of and he would run towards the kunai he jumped off. he would easily take the kunai before it hit the ground, he would roll in to a standing position after jumping off the tree following it up by jumping towards another kunai that was slightly far away but he didn't jump far enough as he was heading back to the ground he would use yell out, "dark release: judgment!"
Kansatsu would open his palms having them face the ground as his bandages would unravel, blue flames would shoot out his palms with enough force to cause him to be shot upwards making him reach the tree but when he stepped on the tree he would damage the tree aa he used too much chakra causing him to fall on the ground ending his attempt.
"Damn it I was so close to getting all of them!" Kansatsu exclaimed in anger as he failed to get the kunai Kakashi would walk up to Kansatsu and say, "well Kansatsu how many kunai did you manage to grab before you fell?" Kansatsu would pull them out count them all and say, "well Kakashi sensei I managed to get twelve of them this time." Kakashi would help Kansatsu stand up and say, "well you see thats sixty percent of all the kunai plus you managed to use two new techniques to help you at the end."
Kansatsu would be a little motivated by Kakashi's words as he would continue, "that's what I see as a win as it was your first attempt as with how you performed right now, you would be at the top of the class with a large gap between you and second place." Kansatsu would throw the kunai he had in random directions and he would say, "thank you Kakashi sensei for the words of encouragement, now you need to check on Naruto Sasuke and Sakura who must be waiting for you."
"you are right, I'll go check on them while you continue with your training here and don't stop until you have gathered them all in one attempt." Kakashi said walking towards were Naruto and the others were as Kansatsu start dashing from tree to tree.