Apart from breathing styles, I had made chakra flow and fighting styles for all weapons, which was very much appreciated by Guy and Tenten, who were weapon masters, and although Guy could use Beast breathing, he still preferred nunchucks, so, I made Night Sky style for nunchucks specifically, with which he could do devastating damage spread out like stars in the night sky, which I myself was proud of, and he absolutely loved it and mastered quicker than the beast breathing.
I had also made Flowing Cloud Breathing, which has all elements, and used a bo staff, which I used for myself, as I found it to be the best one to my liking. Of course, I had made it for every weapon, but only for myself.
The change that I made in the breathing styles was to use sage chakra, as I had already made a all elemental sage mode without relying on the summoning animal.
This was of course only for myself. The ones I gave others were either purely physical, or had chakra as medium of energy instead of only breathing in oxygen and stamina.
I also made the marine six styles, both with and without chakra.
It was quickly popular among jonin as it was more versatile and could save life in battles.
I had also made chakra armor taking inspiration from the snow armor in that filler episode, in which you could add your own modifications of chakra nature and shape as you wish.
The best though was the breath hiding technique which is effective only with similar strength, and could fake death for some time.
In one year of my travel to here, I was already at peak of Kage level.
I had recreated all the trademark ninjutsu like rasengan and chidori with their variations, elemental chakra mode, so I was definitely the best when it comes to combat skills among all Kage as I could even replicate kekkei genkai like ice release and the like.
Recently I promoted to special jonin and had started modifying the existing ninjutsu to be better, easier to use, or more powerful, which was a blast as I submitted at least one a day, and even if it was low level, it was starting to get on Tsunade's nerves, due to all the paperwork she had to do, and thus she stopped me after I was done with all C-level ninjutsu and was moving to B-level.
Instead, she gave me sealing jutsu, and told me to develop it instead, which although not my intention, was alright as well as it was in my plan as well anyway in the near future, but this is fine as well.
I had planned to give the developed jutsu after finishing the rest of the jutsu, but now I can do the same with seals.
While Hiroshi was planning how to start with increasing the workload of Tsunade indirectly, the person in question was having a headache because the paperwork from the C and B rank jutsus was still piled up not yet done due to the high frequency.
"How much more is left?!"
"We are only halfway through now, Tsunade-sama."
"That's it, I quit! I am going drinking."
"NO Tsunade-sama! You cannot leave this work as it is important if you want to approve of the new jutsu techniques."
"Arghh! I will go crazy if it goes on like this. Yes, let him have this problem before he submits any more of his research. He even surpasses my second grandpa in research, but it is more of a burden than boon with him spitting out at least one jutsu upto C-level daily."
"Okay Tsunade-sama."
Then Shizune left to give the instructions to Hiroshi who was the cause of the rapidly increased paperwork.
"Hahaha! Let's see how you deal with this you brat! If you don't come up with something with your brain, I will not let you do anything else, and make you do the paperwork yourself."
Tsunade laughed out loud as she always had a headache with the constantly increasing paperwork, but couldn't do anything about it, but now she could, so she was very happy, especially to the source of it.
Soon, Shizune came back with the person in question.
What happened that I was urgently called back? I was going to make a wardstone for Konoha as now it is finally ready. I got this inspiration from Harry Potter wardstones. I made it with chakra metal which was made in the way of engraving sealing on it, which was how famous swords like kusanagi were made along with special metals or ingredients.
I just soaked and saturated the forged and refined piece of chakra metal, which was as purified as it could get, with sage chakra while using sealing formulas, which increased the potency, as well as power of the seals.
It will work as a protective cover all over konoha while also slowly keeping nature energy trapped in Konoha, which will increase the concentration of it, along with passively strengthening everyone in the barrier.
It kind of worked like a protective formation and energy gathering formation in xianxia novels, which was the inspiration for this.
The saturated natural energy will be stored for the powering of the barrier, when in need. It was also undetectable to everyone when not in use, and even when in use, only those who could use natural energy, could sense it.
Plus, with my sealing language being unhackable from others, it was a pipe dream for anyone to observe its functions and break or modify if not by sheer force, which will be difficult even for Amaterasu, tail beast bomb, or susano and true several thousand hands to break without multiple attempts.
Yep. Sage chakra along with the best sealing technique is that OP.
Well although I said(thought) all that, it will take at least a week to set it up for me, and if for others, it may even take months to even a year.
But anyway, I will not be available during the week, so it is better to get it over with and then make it.