Chapter 19: Snapping at Sakura
Disclaimer: Naruto is the work of Kishimoto
Awakening on the futon that was laid on the ground of the small room where he and his team slept; Naruto looked around and found that he was in Tazuna's home.
"Finally" he muttered to himself.
Naruto and his team as well as their client Tazuna finally got to this house with a good long hour walk where he and Sasuke had to drag their Sensei to said place.
For a man that looked quite thin, he was actually quite heavy.
Looking around he found that it was just dawn. He felt his stomach growl protesting for some food to be eaten.
"Yeah I guess I need something to eat after 'that'" he continued to speak to himself. The fight with Zabuza was hard and difficult and drained even him though not to the point of full one training that would blissfully knock him to unconscious if he did.
Besides that he needed to check up on everyone. He felt that Sasuke wasn't in the room but Sakura was still sleeping with a snore. If it's been him of two years ago then he would've found it cute.
Naruto just shrugged since some people snored and others don't. Though a Ninja shouldn't snore since they need to be quiet when sleeping.
Snoring and let enemies know where you are while you sleep is a stupid way to die.
Naruto looked and…Sasuke was…not here? He felt the raven haired team-mate wasn't there but to confirm it with his eyes made him confused. How did he tell that Sasuke wasn't there?
'Might be that I'm used to his presence now. Some people are known to know when other people are not there' he thought looking around the room more.
Sakura was asleep and he had a feeling that Kakashi was still asleep due to his Chakra Exhaustion. He had that kind of feeling so he really didn't bother trying to wake up his Sensei right now.
Okay.
Now this was getting a bit creepy if he could tell whether someone was asleep or not.
'Hmm…what kind of feeling is this?' he wondered though then shook his head as he got dressed. There was no problems since Sakura was still asleep and he be that she was asexual for everyone but Sasuke.
Speaking of the Teme.
'Wonder where the Teme might be…' he thought absently while yawning from his sleep; he walked down the stairs to see the black haired mother of this house. She was…what? In her thirties and yet looked like she was still in her twenties.
It did helps he had a pretty appearance.
What was her name again? Tsunoko? Tsunaki? No….Tsunami? Yeah, that was it. It was hard to catch her name when he and Sasuke needed to get Kakashi into bed to rest. Plus she had the look of 'But you're children' when they came through.
And that is the reason why Ninjas are so successful even at a young age. Underestimating people will kill in the Shinobi World. Along of many many other things.
"Morning" he half-heartedly said to the woman who smiled and said, "Good morning Shinobi-san. Your comrade went out a bit before you."
Oh, that explained a lot.
Gai and Lee got both of them in the habit of training early which meant waking early as well. The Teme was probably thinking and brooding or training. One or the other. He better meet with him to stop him from overtraining again.
"Here's breakfast Shinobi-san" Tsunami said kindly as the smell hit him.
On the other hand Naruto could go talk to him but there was delicious food in front of him at the moment so…
After eating for 5 minutes and his stomach not protesting as much, Naruto started to think about what happened. It was a habit he picked up with the Loops happening.
'Might as well think things through. Rather not rush into things and screw up something simple' he thought eating the food that Tsunami brought to him as she continued to cook.
The battle with Zabuza went well; as well as it could be with Naruto restricting himself to only at most 50 Shadow Clones at once. Any more than 100 would cause that masked boy a bit older than him to appear and take him down.
Which was an extremely bad thing since Naruto could tell that he was stronger than him and his speed was enough to bypass his Shadow Clones. In all, avoiding being taken out by such a person was a good thing in his books.
But the problems started to appear after the damn battle.
Sakura didn't even bother to do anything. Not even scout out the place or try to remotely look like she was guarding Tazuna. She was fawning over Sasuke while trying to put down himself and frankly it annoyed the heck out of both of them.
But enough about that and that lazy bitch.
He was in the next Checkpoint! His hard work which he worked harder than any other loops was now permanent from now on! His resistance seal was still on 1.75x which meant a 75% increase in speed when he used it but now he could train enough to go beyond that point!
Naruto found out an interesting thing about his muscles when he noticed that Sasuke was still at 1.5x on his own seal. With the Kyuubi healing him faster than a normal person could; his muscles would repair themselves faster than before as well.
Which meant he could train faster in physical conditioning than a normal person. Gai and Lee when they found out wept and said something about 'Youth' allowing him to and trained even harder.
Sasuke wasn't really paying much attention since he was too exhausted to complain and Kakashi simply shrugged since he was at a higher rate on the seal at a younger age.
Plus his Chakra reserves could possibly grow larger as well…which Naruto still didn't know was a good or bad thing. He needed a method to constantly increase this Chakra Control later…
But now Naruto was in the unknown. After basically a year training and training to get to the next part of the plot as the note he got said; he was excited wanting to know what could happen next.
Sure there was still the threat of Zabuza still being alive and such but really at least they knew the man was going to try and kill them more opening now.
Click.
It was then that the door opened and a slightly more battered Sasuke appeared. Naruto didn't pay attention to his team-mate and instead opted to continue eating as if nothing was strange at all. Sasuke did the same and after another 10 minutes; Sakura appeared eating less than half of what the two boys ate.
Naruto sighed, 'Despite ALL of us telling her she needs to eat more…'
Yep, Naruto expected Sakura to die on this mission if not for the fact that the Time Loops pretty much saved her a couple of times.
'Now I wonder what will happen next…' he mused staring at the ocean outside.
Several hours later Kakashi woke up and Tsunami cleared away the food that Kakashi ate.
The strangest part was that no one even saw him eat. The food just vanished! Right now, the team and Tazuna were relaxing in the same room when Tsunami came back in with a mix of a worried and cross face.
"Are you alright Sensei?" asked the 29 year old widow mother.
The cyclops turned his eye to her and replied, "Yeah I just can't move for a week or so." Looking over, Naruto sighed thinking of a week without Kakashi to instruct him. That would make things harder to train new things.
Sakura looked startled at this and almost shouted out, "What? The Sharingan is incredible but-" Naruto couldn't help but snort, she had no idea how overpowered it is; "If it puts that much stress on the body I guess you need to have to think before using it."
Naruto couldn't help but to sweatdrop there. When do you NOT think about using a powerful tool? Plus there was something strange about Kakashi collapsing after that one battle. Was the burden too much for the body of a non-Uchiha or was it something else?
"Well we defeated that strong of a ninja this time. We should be safe for a while!" Tazuna added with a happy face while wiping his sweet off his face.
Sakura ignored the man to continue speaking, "By the way, who was that masked kid? I mean he couldn't be that much older! There's no way he's that strong to take down Zabuza like that! Not like Sasuke-kun of course!" she started to swoon to the Teme which immediately backed away behind Tazuna.
'Damn Fangirl' both blonde and raven haired team-mates thought at the same time. If Kakashi was displeased about this he didn't express it. But he still answered her question.
"Sakura, there are people in this world that are younger than you but stronger than me; it's how the world works sometimes. That boy's mask is worn by the Hidden Mist Hunter-Nin team meaning he's an elite among Ninjas" he explained, "They are also known in other parts as body erasers whose duty is to completely dispose of the body without a trace."
The cyclops took a glance at each of his students and said, "A Ninja's body has with it, secrets of the village's ninjutsu, information of different chakra types, herbs and other information that will reveal things about the village."
The man pointed at his closed eye under his headband and added, "For example if I die, the secrets of the Sharingan could be revealed and others could replicate it or a lesser version of it. If you're not careful then there is the danger that enemy-nin may steal your jutsu using your body. One example is of when Kumo tried to steal the secrets of the Byakugan and failed almost leading to the 4th Shinobi War."
The room tensed at this information and Naruto filed it away to search more about it later. This was the kind of thing you need to know.
"A Ninja's body can reveal important information. So by killing and disposing of the missing-nins who have abandoned their village, the hunter-nin protects his information from getting out there. They are the specialists who guard their village's secrets" The man sighed, "No sound. No smell. No body. That is a Ninja's end."
Sakura blanched and shrieked out, "Zabuza has been cut up and disposed of?! SCARY! Sasuuuke-kun~ Please hold me!" The pink haired girl immediately once again tried to molest the Teme as Naruto sighed even more.
Tazuna noted this and asked, "Hey is she really a ninja? I mean the rest of you are strong but…"
"I know" Naruto facepalmed seeing the pink haired thing trip and start crying, "Unfortunately she's stuck with us since teams are 3 maned when we graduate. A month of trying to chance her attitude and nothing changed in her at all. She's still dieting more than a normal civilian as well!"
"Is that bad?" the old man asked.
Naruto nodded, "Ninjas require at least 3 times the intake of food than normal people…dieting in any way will kill you later" he explained, "She's more civilian than ninja from the start with her attitude. She expects our job to be all sunshine and rainbows with people begging for her help and things to fix itself."
The man grimaced since he was risking his life to make the bridge. Sakura's attitude was close to what Gato's is in their attitudes.
One believed money gave him a right to everything while the other believed being a ninja gave her a right to what she wanted and to lord over others.
Naruto made a note to make sure nothing bad happens to their client if he's ever with Sakura.
Roughly an hour later and when everyone thought Kakashi was sleeping; Sakura had the great idea to try and find out what was under his mask.
Sasuke remained silent on the matter and was interested while Naruto contributed with a Shadow Clone as bait in case.
This was a wise decision for the blonde as the man in question shot up with eyes open.
"KYAAA!" Sakura screamed and backed away rapidly as if she stepped on something bad.
"…."
Meanwhile Naruto and Sasuke waited for the man to say something…after 10 seconds of silences Naruto had to ask, "What's wrong Sensei?" though he had a suspicion that his Sensei figured out that Zabuza was still alive.
"Well…body erasing teams usually dispose of the body of the person they killed right away" he explained. Naruto nodded getting it. So that was how Kakashi figured it out.
"So what?" Sakura asked not getting it at all.
Shaking his head at her he asked, "Don't you see? How did that masked body dispose of Zabuza's body?"
"Huh?" Sakura once again spouted out, "How could we know? That masked guy took the body with him when he should have given everything to Sasuke-kun!"
Sasuke shivered to that and moved away from Sakura even more and closer to Tazuna who gave the boy a pitying look of understanding.
"Yeah…" Kakashi used his ability to ignore the ending statement and continued not bothering to address it just yet, "If he needed proof of his work, he could have just taken his head. And the weapon that he used to kill Zabuza. Simple Senbons."
Sasuke's eyes widened to that in shock and fear muttering, "No way."
Scratching the back of his head Kakashi added, "Yeah, exactly" while Sakura and Tazuna sat there confused. Naruto was interested to know that you could put someone in a near-death like state so easily with such simple tools.
"What are you guys talking about?" Tazuna asked.
Kakashi paused dramatically and then said in a solemn tone, "Zabuza is most likely…alive!"
'And there he said it' Naruto looked on to see the reaction of everyone else. Sasuke figured it out so he wasn't shocked but it seemed to not be in the nature of Sasuke of be anything but cool and calm. The client's daughter Tsunami looked confused which was expected since she didn't know anything about Zabuza and was a civilian.
Tazuna and Sakura however were completely shocked with their mouths gaping. Well those two are the most likely to die when he appeared again.
"KAKASHI-SENSEI, YOU CHECKED AND SAID HE WAS DEAD!" Sakura shrieked in an angry tone at her Sensei, pushing the blame onto him in her perspective. However no one followed up and Kakashi shrugged her outburst.
"Yeah I did but that was most likely just a momentary death" he explained, "The needle that was used were Sebons. Unless it hits a viral organ, it has a low probability of killing your opponent. It's even used by doctors in acupuncture therapy. Hunter-nins know about the body's structure thoroughly. Putting a person in a momentary state of death is probably easy for them."
He pointed up two fingers, "First he carried away of the much heavier Zabuza. Second he used a weapon that has a low probability of killing. These two points indicate that his motive was not to kill Zabuza but to save him. We can't ignore that possibility."
"Aren't you thinking too much?" Tazuna asked, "Hunter-nins are supposed to kill missing-nins."
However Kakashi shook his head and replied, "No, with all the suspicion we will prepare before it's too late. That's a Shinobi Rule. Plus whether Zabuza is dead or alive there is no assurance that Gato hired an even stronger Shinobi."
"…."
The room was silent when Naruto spoke up, "So we can also presume that we will face two enemies next time? That masked boy was at least Chunin level and we're-" he then looked at Sakura who didn't notice.
Kakashi nodded to his student before Sakura asked, "Sensei, what do you mean preparing before it's too late? You can barely move!"
'And yet he can still probably kill every last one of us in his condition if he felt like it' Naruto sweatdropped. Never underestimate a ninja; even more so when they are at least Jonin level. God forbid you try the same with someone Kage level.
"Simple. You guys will train" Kakashi stated as normal which took only Sakura for surprised again, "Huh? Training."
Her expression turned angry again and she shouted, "SENSEI! WHAT A LITTLE TRAINING GOING TO DO?! OUR ENEMY IS A NINJA THAT YOU STRUGGLED AGAINST EVEN WITH THE SHARINGAN!"
"Sakura who saved me while I was struggling? You guys are growing rapidly" he eye smiled, "Especially you Naruto. I read the reports from the Academy on all of you and you grew the most even more than Sasuke."
"Hn" Sasuke grunted.
"You grew a lot as well Sasuke" Kakashi assured him, "Both of you are getting closer to Chunin rank in strength now.
"How can that dead last get any stronger?!" Sakura shrieked out in disbelief, "There's no way he can get stronger! The Academy proved he was worthless! I'M THE TOP KUNOICHI OF THE YEAR HERE!"
The room was once again silent as a good amount of pressure came from the chakra that was coming out of Naruto's body. It wasn't killing intent but sheer pressure that came with power and Naruto had LOTS of Chakra which made it difficult for him to control it all when he was pissed off.
There were some things he could endure. The glares, insults and attacks from the villagers from time to time though now he was a Shinobi they can't touch him anymore without punishment. However for this piece of trash as he believed to say that…
He was REALLY pissed here.
"Sakura" he stated in a chilling cold tone, "There were a total of three Kunoichi that graduated this year. Of the three of you, you are the only one without a clan backing her up. Ino and Hinata both have their clan techniques to fall under while you have nothing."
He was actually surprised he remembered the two. Their teams would occasionally meet in the passing.
"The Academy course has heavily focused on the more theory side of a Ninja's life to attract more civilians and encourage them to try to become ninjas. Over 70% of our grading comes that that alone. Hinata though with her confidence issues is the best Taijutsu user in our year, male or female."
He let that fact sink in. While he still didn't know why she turned red and faint around him, he knew that she was good at Taijutsu at least. Even Sasuke fell short of her even if she doesn't show it.
"Meanwhile Ino is the second best in Taijutsu for females and also has the best overall score in our class; even higher than Sasuke here. And while she may be physically lacking like you are in ability, she has her Clan's Jutsus which are powerful and feared."
He looked at the pink haired girl again, "So tell me? How do you compare to them? No Clan. No Jutsus. No outstanding traits. Nothing to back you up as you are a First Generation Shinobi from a Civilian family with low Chakra Reserves. The only thing you have is Chakra Control and you haven't even bothered to find out ways to use that!"
Sakura was really afraid of Naruto right now. He wasn't loud, he wasn't obnoxious and wasn't clinging to every word she said.
And he was putting her down piece by piece and no one was coming to help her. And this strange pressure from the Baka was not helping; it was like the one that came out during that battle against Zabuza. She felt like something was pressing down on her.
But this was the Baka she was talking about so it couldn't be dangerous.
Therefore she gained some courage and superiority knowing he couldn't even touch her and stated, "So what? I'm still better than you! You don't even have decent Chakra Control!" she smirked finding that area always hurt him the most.
But Naruto did something she didn't expect. He laughed. He laughed at her, looking down on her.
"Do you know what the reverse Chakra Theory is?" he asked, "It is the theory that Chakra Reserves and Chakra Control are connected to each other where the higher one is, the lower the other is. And It. Is. True."
He pointed at her, "While I admit you have good Chakra Control; hell perfect Chakra Control that I will never get in my life even if I tried to; you in exchange have the lowest Chakra reserves in our graduating batch; hell even lower than most Academy Students!" he sneered at the end.
Pointing at himself he then added, "I on the other hand have the worse Chakra Control of our year; lower than most Academy Students" he smirked, "Well used to at least. My Chakra Reserves already rival Kakashi-sensei. And it will grow, it has been growing to the point that I constantly need to train my Chakra Control to have any control. By the time the year ends, I will most likely surpass Kakashi-sensei in Chakra Reserves and in a few years end up with Kage-level Chakra Reserves which would continue to grow for the rest of my life."
He added more Chakra leaking out from his body to empathise this.
"So tell me, which one seems more dead last. The one with nearly no Chakra in her body with perfect control over it. Or the one with nearly no Chakra Control but has an immense amount of it which can be used to unleash Ninjustu after Ninjutsu without end?" he asked as he glared at the girl in front of him.
"B-But you can't even use the Clone Jutsu!" she pointed accusing him of something he wasn't aware of.
Naruto snorted to that fact. If not for that he could've graduated a year early or maybe even 2 years early.
"Do you really think I need that E-rank Jutsu when I can make Solid Clones instead? A Jonin B-rank Jutsu and its Kinjutsu varient is what I learnt in mere hours" he stated with a bored tone, "If not for the fact that I needed to fix up my Taijutsu and Chakra Control; I would've learnt more than a Dozen Ninjutsus by now."
"So tell me what you can do? Tell me what you did do in the month you graduated from being a little girl to a Shinobi?" he asked with venom in his tone, "You did nothing. No training. No gain in ability. No gain in knowledge. You carried the least supplies of all of us in this mission. You failed to even attempt to do a half-ass job of looking like you were protecting Tazuna. You stood there in fear as Kakashi-sensei was captured. You did nothing to help as me and Sasuke saved them. You did nothing to help carry Kakashi-sensei to this home. You are useless. You are a liability. You are no Ninja. You are a civilian trying to play one."
The room was silent from Naruto's harsh words. Sakura started to cry but no one was going to comfort her. A ninja's life was harsh and difficult. Those who did not know this and were ignorant of it will die sooner than later.
Kakashi sighed seeing he needed to cut this tension before it really destroyed the team. He knew that Naruto had changed since the Academy and grew stronger but didn't he used to have a crush on the girl?
He sounded like Minato-sensei when he did the same thing Naruto did to Sakura to someone who was like Sakura back when he was his team.
Needless to say the girl stopped being a Ninja the next day. It was a ground-breaking tone and feeling along with a list of your failures that break normal people. A good enough Ninja would not be too bothered by it. A good Ninja would note these failures and correct them.
"Mare mare" Kakashi waved getting everyone's attention just before Naruto started to leave the room who didn't want to be near Sakura right now, "Despite what Naruto said, this is just training until I get better. You won't be able to beat Zabuza without me either way."
He looked to see if Sakura had any questions who was silent before continuing, "A person who has been put in momentary death will not be able to use their full strength immediately. It takes a while before their body turns back to normal."
"And we train until that time?" Sasuke asked interested.
"Yes, I estimate Zabuza needs a week to fully recover before he moves again. So you all have a week to get stronger. This will be fun for you" Kakashi explained as Naruto nodded to that. He needed some alone time.
"That's not fun" a boy stepped into the room just when Naruto was about to exit. Naruto frowned not knowing who this boy is and placed a hand on his Kunai before realising his Chakra levels were too low to be even an Academy Student.
"OHH! Where were you Inari?" Tazuna shouted out excited in a somewhat fake tone. The experience with Naruto dressing down Sakura left him speechless and a bit afraid of the boy.
Naturally Inari didn't know what just happened and naturally dismissed Naruto before coming to his grandfather saying, "Welcome back grandpa."
Tsunami seeing this chance to do the same as her father immediately scowled at the boy in a motherly way and said, "Inari say hello to these people. They are Ninjas who protected Tazuna" while said grandfather patted his grandson on the head.
After a moment of looking at them Inari pointed and said, "Mum, they're going to die."
"…."
The said Ninjas in the room were silent on this statement. Kakashi knew better to respond and had experience with these kinds of people. Sasuke was the same and didn't care about the opinion of a brat and Sakura was still in shock due to Naruto.
"There's no way you can win against Gato" Inari stated as everyone was silent.
Therefore it fell onto to Naruto to say, "Doesn't matter. Our job is to protect Tazuna no matter what. We have protocol to eliminate anything in the way of this" to the boy before musing and adding the fact, "You do know that your Grandpa is a hero right? Not many would risk their lives for others and their country for civilians at least."
Inari looked at the blonde and in a sneer said, "What are you stupid? There's no such thing as a Hero? Don't tell me you want to be one?"
Naruto chuckled thinking of the fact that there was a certain demon fox inside of him which most of the village feared. They feared him. They feared the power he held. They feared the power that he could use.
And they left him alive since he was useful. A tool. A weapon to be used when they needed.
This might have been dark for Naruto but there were many things that were dark in the world; it just happened to be that most of them involved Ninjas in one way or another.
Because of this Naruto simply stated, "I'm a Ninjas of Konoha. If I am required to be a Hero than I will become one. The same is if I am needed to become an assassin, a bodyguard, a villain, a soldier or a weapon of war."
"If you don't want to die you should leave" Inari once again stated as Tazuna asked, "Where are you going Inari?"
"To look at the ocean from my room" he replied leaving. A few seconds later Naruto having enough for one day left before saying, "I need some alone time to calm myself."
A few seconds later he was on the other side of a door where Inari was held sobbing saying the word, "Dad" over and over again.
The feeling of wanting your parent and yet to never see them ever again; Naruto felt something similar to that in the past.
Questions on why he was alone, was he abandoned, did his parents die ran through his in his childhood more than he could count.
And it was such a relief when he knew he wasn't abandoned but rather his parents sacrificed themselves to protect them.
He was a Ninja, he could deal with it.
But like the Kyuubi, Gato had destroyed lives for the worse.
Naruto knew one thing right then. Gato needed to die.
A/N:
So yeah, this chapter was pretty much how this Naruto felt about Sakura...which may also be my view of Sakura in part 1 as well.
Basically Sakura-bashing here.
I made my points in the story, not going to argue them a second time here.
But I just have to say one thing about Sakura's placement in Team 7. She's frankly boring and gives little to no dramatics to the story compared to the other three.
Ino would've been the same but she had the extra flare of having her mind Jutsus. Plus her Mind Jutsu would've been a good way for the other Genin in Team 7 to know about the Kyubi...well some may wish at things that never happened.
That could've been an interesting spin to the series at that point if Ino replaced Sakura.
Hinata...well instead of Sakura trying to woo Sasuke it would be more her trying not to faint in front of Naruto (And way funnier if Naruto was still as clueless as before. Also would give NaruHina haters less reasons why they scream this pairing would not work)
Furthermore Hinata was really just stronger than Sakura before the Timeskip in strength alone able to face off against Neji the Top Genin for a while, let alone speed and all that other stuff that Sakura seemed to lack before her training under Tsunade.
But with Sakura she...umm...chase after Sasuke...hits Naruto, some points where she actually does something useful before turning useless again. Really that's what she literally does for most of the series.
It also doesn't help that her first reaction to Garaa being defeated was 'Sasuke-kun did it!' instead of confirming anything else. Well considering her mindset for that, since to her Sasuke is stronger than Naruto and she fainted before the latter summoned the Toad Boss.
It's quite easy to see why and how Sakura thought it was Sasuke who beat Garaa.
Anyway, I'm going to discuss something completely unrelated to this chapter that a review pointed out.
Genjutsu.
(Economy will come later since I have material on that in a later chapter)
Genjutsu is one of the funny things that never really get explored in the Naruto world that much despite it being a lot more Ninja like and even more lethal if done correctly.
See Itachi for that alone, taking on Jonins with Genjutsu.
To be blunt about it, Genjutsu is about controlling others. Its just that this series focuses more that Genjutsu is about using Chakra to control others. There are so many other ways 'Genjutsu' can be used to manipulate something other than just shoving a very controlled amount of Chakra into someone's head to control what they see, feel and know.
Buuut I rather not talk about that right now.
According to Naruto wiki, Genjutsu counts as under the Yin Style of things which makes sense since Yin Chakra is essentially spiritual energy without the Yang or Physical aspect of it, or at least a much higher raitio of it.
And due to this, most people who specialise in Genjutsu have much lower reserves than Ninjutsu users like Taijutsu specialises since they focus on one aspect of the Spiritual and Physical parts that creates Chakra overall.
However a lowered reserves gives Genjutsu users and ironically Taijutsu users as well more Chakra Control than their Ninjutsu peers.
This is important mainly because Genjutsu involves the manipulation of the brain and with even a slight bit of research, anyone can tell that is VERY hard to do without screwing up somewhere.
The cerebral nervous system is where Genjutsu affects and that controls the most of the functions of the mind and body. Basically this is saying that Genjutsu affects the brain and spine, so yeah it doe that.
Anyway, the question now is how Genjutsu causes people to see illusions and such?
By manipulating the chemicals in the brain of course!
Now you have to be thinking that Genjutsu is similar to Medical Ninjutsu.
It actually is when it comes to controlling someone. Medical Ninjutsu in essence is an amplified booster to the human body. Chakra itself is a natural booster and allows people from jumping up higher from the ground, dampening blows to using Ninjutsus and such.
Medical Ninjutsu takes this booster quantity of Chakra and adjusts it for healing so that particular trait is the most predominant compared to its other traits. But how Medical Ninjutsu is similar to Genjutsu other than that?
First both Genjutsu and Medical Ninjutsu involve the manipulation of the human body. Not many other things does that aside from the typical melt if you touch and so on.
Second is that you are using your Chakra and transforming it (Like Nature Transformation into Fire, Water and so on as well) specifically for a delicate task that will fail without extreme control.
But back to Genjutsu alone.
Since we've established that Genjutsu for the most part controls the brain and anything connected to the spine (THAT second part is most likely how the Yamanaka Clan's Jutsu works, or at least the whole control your enemy to kill your enemy from afar part), we now can about how Genjutsu can control someone.
For example you could possible expand one component of the brain which controls a person's sense of fear and make them panic, another which influences their attention span to hide something from them and so on.
Induced blindness? Cut off the part that allows a person to response to it, same with the other senses.
Want someone to do what you want? Plant a subliminal message in their head. Want them to see something that's not there? Do the same with an image.
Want absolute control over someone?
Well this is where things get confusion since you are not ONLY trying to control their entire brain but also their entire Chakra System.
Wait! Doesn't Genjutsu only control the brain and such? Well...the thing is that the Brain is connected to the Chakra System. It is LITERALLY one of the 8 Gates and not only that but the FIRST Gate of the Chakra System.
Why do you think disrupting your Chakra actually breaks the Genjutsu or why opening one of the Gates could?
Tsukuyomi is an extreme example of complete control as it can trap someone so completely that it warps a person's sense as time as well. This Jutsu is essentially a complete control type Genjutsu for every sense a person has including sight and pain along with time perspective control as well.
And because a person's sense of time is warped, disrupting the Genjutsu is next to almost impossible since one attempt in the real world would be like several hours in the Genjutsu.
You are literally cut off from your body and any way to control your Chakra inside this Genjutsu making it next to impossible to break.
Yeah, and people wonder why this is one of the ultimate Genjutsus out there.
Due to the fact that there aren't many people in the higher up of Ninja ranks that are so easily taken down by 'Basic Genjutsu', Genjutus are more support than a primary method of fighting despite Tsukuyomi.
Mainly because there aren't many people who could use and make Genjutsu that are powerful to have complete control over someone. Hell Kurenai is probably one of the few who can along with Itachi in Konoha that can without the use of a Sharingan to aid them.
In all, Genjutsu can control a person's brain in ways that makes others think everything is normal and control what they can feel whether literally or emotionally through correctly pressuring or inflating parts of their brain which is also part of their Chakra System.
Therefore when faced with a Genjutsu user that can manipulate you like a puppet with a single finger or glance like Itachi, RUN!