Akira genuinely did want to see Uzu because it wasn’t shown that much in cannon, but he also wanted to see if he could find a way to save at least some of the Uzumaki from destruction.
The Uzumaki were very powerful and could be helpful in the eventual fight against Madara.
“Hmm, I can’t leave Konoha but you just reminded me that I could use a shadow clone to carry you all. Alright we’ll all take a trip when Nawaki is on break from school, Tsunade apply for a leave during that time as well.” said Mito with a thoughtful look on her face.
“””Alright grandma.””” all three replied.
Reminding Mito about shadow clones right before asking to go to Uzu was definitely part of Akira’s plan.
He felt like Aizen with all these big brain moves he was using.
After breakfast, Akira didn’t immediately do chakra training, but went on to activate his sharingan and read Tobiramas notes about the eight inner gates and his notes on the human body.
He remembered that someone created a breathing method called Seven Heavens breathing method in a filler episode, and acted similar to the eight gates, boosting strength and had different stages.
That technique reminded him of an anime he used to watch in his past life, Demon Slayer.
Breathing techniques there is like what chakra is to here, one of the main pillars of strength.
Since both acted by increasing lung size and taking in more oxygen to the body, he wanted to recreate it, and see if he could achieve a state similar to total concentration Breathing constant.
After reading the notes, he sat in a lotus position, completely forgetting Tsunades teasing the day before.
Both the Seven heavens method and Total concentration Breathing required taking in more oxygen in the lungs, thereby giving the blood more oxygen.
In doing so it boosted physical capabilities, body temperature and heart rate to higher levels.
This proved that breathing techniques were viable even here.
The Seven Heavens method had 3 stages like the eight inner gates but Akira suspected that was because it unknowingly activated the first 3 gates.
Every living being had the gates inside their body, but unlocking them was very difficult and only taijutsu masters were able to do it.
Akira didn’t want to activate the gates, and just wanted the physical boost it provided to strength and healing.
He started breathing, inhale through the nose, hold for a second then exhale.
Each time he concentrated on his diaphragm, trying to feel any changes.
After trying for a while and adjusting he felt something click.
He breathed in a deep breath and it just felt right.
His blood started moving faster, his body temperature raised a bit and his grip on his knees felt a little stronger.
And then he started coughing, hard.
His body wasn’t yet accustomed yet so he couldn’t hold it for long.
It wasn’t perfect, not even close, but it was a start.
And just like he did with Tobirama’s notes, he would grind the heck out of them.
‘Am I a genius?’ Akira had the sudden urge to throw his head back and laugh wildly, luckily he caught himself.
‘These Uchiha genes really are a pain.’
After an hour of breathing, it was time for fuinjutsu with Mito.
He met her in the living room, chakra ink and paper laying across the table while she was waiting patiently, the way a teacher does for her student.
He took his seat right next to her.
“Akira , today we’ll be doing storage seals. Let’s start with the theory, what different seals are used to make a regular storage scroll?” Mito began.
“Activation seal, space seal, time seal and release seal.” answered Akira.
“Very good and could you tell me why the time seals are not used on people?” she continued
“Because if that seal is used on anything with life as the target it could be rebounded on the caster as well.”
“Yes, stopping time for inanimate objects is easy, but even to this day we struggle to do anything of the sort to things with life. I’ll show you how to draw the seals for small sealing scroll and how to add the expansion seals to make it bigger.”
Akira activated his sharingan, the photographic memory came in handy at times like these.
Mito saw but didn’t stop him, she knew his passion for learning and, given his personality, actively encouraged it.
She knew of another boy, Tsunades teammate who also had a passion for learning but he tended to let his thirst for knowledge blind him from everything else.
Akira on the other hand had a very good relationship with both Tsunade and Nawaki, and the few times he accompanied her out, he greeted everyone politely.
He found that the Main reason for needing bigger scrolls to store more things was because of the expansion seal.
The bigger the space you wanted inside, the more expansion seals you placed.
He wanted to find a way to compress it so the seal wouldn’t be so big but that would require alot of research and time.
Akira also wanted to learn the four symbols seal that was used to seal the nine tails.
Minato created the eight trigrams seal by overlapping and improving two 4 symbol seals then sealing the nine tails all while having a hole in his stomach and having his soul ripped out by the shinigami.
He wanted to improve on that because he did have plans to collect some tailed beast chakra.
He didn’t want the entire tailed beast though, just some chakra to study.
Each tailed beast had something unique to them if he could study it, it would definitely help him get stronger.
After finishing fuinjutsu, Mito helped him in improving Kagura minds eye.
The sensing technique can track chakra over dozens of kilometers, focusing on targets to perceive movements, characteristics and location.
It could even detect emotional fluctuations to determine if someone is lying or if they are under a genjutsu.
Mito was able to perceive nature energy as well, just like Karin in canon, they just never learnt sage mode.
To be honest Akira felt that Kagura mind’s eye was way better than the byakugan.
All he needed to do was combine Tobiramas sensing technique to remove the drawback of being immobile during intense tracking, and he would be a top tier sensor.
Combine that with malice sensing, which he was planning to learn by studying the nine tails chakra, and no one inside his range would be able to escape his perception, even white zetsu with his transformation technique that even copied chakra perfectly.
“Both Senju and Uzumaki clans have an abundance in physical energy which can be used to detect the environment and other people’s chakra. By sending out a wave of chakra we can sense all these details clearly. The Kagura mind’s eye is a better, innate technique that helps sense chakra from further than normal and with more precision.” said Mito.
“But how can the byakugan have almost the same effects without having the physical energy we do?” Akira was genuinely puzzled, the anime didn’t explain all these things in detail after all.
“The byakugan focuses physical energy, or yang chakra in the eye muscles and straining them, it boosts the user’s sight allowing 360 degree sensing, detecting chakra pathways and seeing through objects.” she replied.” That is why they have veins bulging near their eyes when the Hyuga activate them.”
‘That makes sense, it would also explain why Kaguya doesn’t have the Tenseigan after eating the chakra fruit.
The yang energy from the fruit enhanced her body, essentially giving her immortality while the yin energy went to creating the rinnesharingan.
‘
This was why Akira loved learning in this world.
Even though he had knowledge from his past life, actually living here meant he could unearth all the things the show glossed over or completely left out.
And learning about a fictional energy like chakra and its different applications was very interesting.