[Author here! Just giving you all a heads up that this is not a canon thing from Naruto and that yes I am aware of how OP it is but it has serious downsides I promise.]
(Normal pov)
I used my newest clone to head towards the land of water because that was a spot that we had the biggest concentration of missing nin and bandits. I ended up getting attacked a total of three times as I headed that way. The first was by some bounty hunters that thought I was easy prey because of my age. They didn’t even realize they were dead before i was walking away already. It was almost comical to watch them turn around quickly only for their heads to slide off from the point I had cleanly cut through in an instant.-
The second attack was far more interesting as I ran into some of the fleeing shinobi from Kiri that had been part of the Mizukage’s faction that was starting to lose the war badly. These shinobi were like rats abandoning a sinking ship and didn’t want anyone to know about their treachery. Of this group in particular there was one Jonin and three chunin that I assume were taught by the jonin. Unfortunately for all of them they were all water release users which meant that my poison mist technique was not something they could handle.-
Obviously they didn’t just sit still and let the mist touch them when it was clearly not something good for them. But their lack physical abilities meant that it took me no time at all to breach their formation and touch each of them with a whiff of mist and that was enough. The toxin was insidious and devoured them whole within a minute of exposure despite how they begged for their lives and struggled. I summoned my cat and gave it their gear before de-summoning it which meant that the stuff would be waiting for me back in the village even if this clone got killed.-
My whole reason for this was because as traitors these shinobi had stolen scrolls and equipment of great value from their village before they left. Even if I myself didn’t want any of it the village would reward me handsomely for turning it over. Once the civil war in the mist village was over we could even sell back the stuff we had recovered from these traitors to them. The third fight was an actual fight because I ran into that Immortal and the abomination named Kakuzu the next day.-
“Jashin has smiled upon me and provided a worthy sacrifice!” the immortal said with a mad glee.
“Nothing personal kid but your bounty will be put to good use.” Kakuzu said calmly.
“Quick question before we start, what’s up with your bodies? He’s immortal as far as I can see and you have five different chakra signatures.” I asked curiously.
“Oh jealous are we? It’s only natural that you a nonbeliever would be envious of the gift Lord Jashin bestowed upon me!” The Immortal said zealously.
“I don’t need to tell a dead man anything.” Kakuzu said with a much more aggressive tone.
“Seems like you touched a nerve brat, made my partner upset time to die then.” The immortal said as he rushed towards me with that triple bladed scythe of his in hand.
‘Sage art: bisection!’ I thought as I casually used my Hawks ability super charged with sage chakra to create a thin blade of wind that traveled from my palm at super sonic speeds into and through the immortal splitting him down the middle.
“RAGHARG BAH RAIT!” the two side looked enraged as they flew past me harmlessly while clearly trying to speak some for of curse but obviously failing since the wind pipe and vocal cords were in half.
“Hmph! I’ve told that fool over and over again that even if he can’t be killed he should still dodge rather than try and trade blows. Now he’s given me even more work to do.” Kakuzu said angrily before his hand extended towards me with black threads holding the two pieces together.
‘Fire release: fireball jutsu!’ I thought as I molded my chakra and spat out a huge ball of flame in an instant causing Kakuzu frown as he quickly retracted his arm and dodge to the side.
He quickly shrugged and to my surprise three weird thread creatures emerged from his body with white masks that had the symbols for fire, wind and lightning. My eyes widened as I finally understood why he had so many different chakra signatures. He literally had five different hearts that held a different chakra affinity and signature. It was clearly the result of some sort of forbidden jutsu as it was obvious that those hearts didn’t originally belong to him. He wasn’t even human anymore but a man shaped monster that needed to be put down.-
I flickered away opening the distance between us and immediately clasped my hands together as though I was praying. Instantly the plants near me began to die as I forcefully drained my surroundings of natural energy that I funneled into my body. As the balance of chakra to natural energy that I was born with started to shift in favor of natural energy black markings appeared around my eyes like tattoos. My energy became much denser as it ran wild outside my body causing destruction with my mere presence.-
“Sage transformation: Saint ascension!” I spoke with a heavy voice like that of a mountain rockslide as the transformation ended.
This transformation was a result of my years of experimentation with natural energy and my own sage mode. I had long since discovered that there was consequences to having an improper balance of natural energy to chakra but what happened if you created an entirely different balance than the normal easy one? The answer depended on which way you balanced it. Chakra dominant and natural energy subordinate gave you sage mode but what happened if Natural energy was dominant and chakra was subordinate, I dubbed this state [Saint mode].-
The naming sense was kinda on the nose as obviously a saint was higher up on the ladder than a sage since one was a divine force while the other was just a wise man. I’m not great at naming stuff so I just went with what sounded logical. That said this state was not to be trifled with as in this form all of my physical abilities are multiplied by a factor of fifteen and my jutsu’s become natural disasters, in theory that is as I was never willing to unleash one near the village.-
“While becoming a sage at you age is impressive you are not the first I have fought and you are no Hashirama!” Kakuzu said aggressively as his heart monster things came at me.
I didn’t respond but merely raised my right hand with my palm flat against the air and pushed. Immediately the air froze and solidified in front of my hand that caught fire from the sheer friction before momentum exploded forward from my palm. Miles of forest and rock parted before my palm leaving a long trench half a mile wide and deep.