Kansatsu would start the chain of throwing the twenty kunai that came from the original twenty that started this type of training and dashing around the place like a rubber ball.
Each attempt took a few seconds, those seconds would turn to minutes and those minutes would turn to hours as Kansatsu developed using the chakra threads he used to pull the kunai towards him as well as using dark release judgment just as pushing force without the blue flames that accompanied them.
While using the chakra threads he realized that he could use them to thown his senbon in normally impossible angles allowing him to be more dangerous as a whole while improving his overall accuracy with projectiles. Without realizing Kansatsu would have completed the exercise multiple times and he would stop himself from throwing the kunai again.
"Damn how many times have I already successfully finish this stuff," Kansatsu yelled at himself seeming insane to anyone who would see him who would pass by, "well I know that I passed five some time ago so I'll just mark it as five and do something else that isn't pinball simulator.
Kansatsu would walk to the middle of a nearby lake were the would use multi shadow clone jutsu to create ten clones to face in combat and immediately the clones would surround him and he would say, "well I doubt that there is any need for me to explain why I created all of you here."
"don't you need to rest for a bit as you should be exhausted from doing all of that." All the shadow clones said as Kansatsu would look as them slightly confused as he would answer them, "well don't worry about that use of chakra I'm fine..." Kansatsu would pass out on while standing on the water which would cause the clones to disappear resulting in him floating on his back in the middle of the lake.
Kakashi would come with Naruto, Sakura and Sasuke to take Kansatsu back to the house to eat as it was getting late and they had to eat. They would find Kansatsu laying on the surface of the water as Kakashi would see the twenty kunai on a single tree with the words "I did it five times successfully" written next to them and Kakashi instantly knew what they meant.
"Hey sleepy head! Time to go eat!" Naruto shouted at Kansatsu who did not move and Sakura would say, "Kakashi sensei, he's not moving something is wrong." Kakashi would look at Kansatsu who was clearly unconscious as Sasuke who also noticed what was happening would smugly say, "well that's like the idiot to overdo it with his training and end up unconscious or injured."
"Well Sasuke it seems like that's how he is as person." Kakashi said walking towards Kansatsu, when he reached him, had him in the fireman carry and while he was walking back to the others Naruto would say, "well how did he get to the center of the lake and how is he still dry after lying on water for who knows how long.
"He must have walked to the center of the lake and cast a high number of advanced jutsu after the training he had from what I get through what I see." Kakashi said looking around seeing what looked like were a bunch of shinobi had a massive fight that spaned day but there were no bodies. " Kakashi sensei what type of training did you give to Kansatsu anyway?" Sakura asked curiously to which Kakashi replied, "well it was just some movement exercise combined with the tree climbing exercise."
Kansatsu would wake-up to a familiar sight of the ceiling as he was in the bedroom after passing out again, "Damn it I fell unconscious again and by my own hands this time so I have no one to exact my revenge on." Kansatsu stood up and walked out of the bed room he has never gotten into while conscious.
"Hey everyone sorry for troubling you by having you carry me here again." Kansatsu said to the team bowing to them in apology as he had no idea on how everyone would react to him constantly overdoing it and the fact that it would affect him negatively in the future if he keeps it up.
"Do you know how worrying it is to deal with someone who constantly injures himself, you could deal long-term damage and lower your chances of being a high level shinobi with this pattern of training." Sakura said pouting at Kansatsu who would look at Sakura and say, "thank you for caring for me so much."
Kakashi would interject saying, "well Kansatsu could you tell my why did you keep going even when you were low on chakra as you must have felt it when you reached thar point." Kansatsu would pause trying to remember as much as he could about the moment when he passed out but to no avail.
"I don't know how to explain this but as of recent I have the constant feeling that my chakra reserves are getting smaller and smaller the more I use it, I know that you won't believe me but do you have a clue on what could be causing it." Kansatsu said to Kakashi who was deeply concerned as he did not sense any lie coming from Kansatsu.
"what do you mean by that, is it even possible to have less and less chakra as time went by. " Naruto said looking at Kakashi who was deep in thought trying to figure out what would be causing that. Kakashi's silence would cause the team to be slightly afraid as they would be tortured by their imagination which was giving them their wost case scenarios.
After a short period of silence that felt like hours Kakashi would walk up to Kansatsu and move around hin analyzing him in a attempt to see if there were any physical changes that took place. Kakashi would carefully analyze Kansatsu using his memory of how Kansatsu was at the time of the missions and how he was now.
"Well from what I can see the only possible causes for this is that your body and chakra are both slightly unstable, they are fighting for what little resources they can get to stabilize which could cause the fatigue and your multiple kekkei genkai are not making it any better as they put a strain on both your body and chakra." Kakashi said as all of what he said made sense in the end as all of this power he has had to come with a price.
Kakashi would add to his previous statement, "you should avoid overworking yourself which is why I forbid you from fighting when Zabuza and his ally arrive." Kansatsu felt slightly deflated hearing Kakashi's assessment on what was going on with him as it meant that he wouldn't be able to take his revenge on Zabuza for knocking him out when they first met.
"Thank you Kakashi sensei for telling me what was happening as it worried me heavily as I was afraid with the thought that I was going insane and thank for believing me when I told you about what I thought was happening. Now if you don't mind can I go outside for a bit to clear my head from what happened as I'm not physically tired, just mentally and emotionally drained."
Kansatsu looked at Kakashi seeming like the glimmer of hope he had vanished and all hope had left his body Kakashi would put his hand on Kansatsu's shoulder, "well Kansatsu you can go but don't take too long as even though we know that Zabuza is tending to his wounds Gato and his thugs are still a problem as they are everywhere and there are too many of them.
"Got it." Kansatsu would walk out of the house contemplating his decisions and if this was all worth it if it weakened him as time went by which would result in him not being able to defend himself from anyone.