The Uchiha - Senju Immortal

[Author Note: Hello ma dear readers, um... sorry for not posting chap yesterday, I was just lazy, also, if you like novels related to Greek Gods and Cultivation, I ask you to give a chance to ma originah book 'The Human that became a God', it is very fast-paced on the start but the pace slowed down, well, that's it, cya] PS: I know I wrote it wrong, don't kill me, 'kay? and yes, I'm shamelessly recommending it to you.

''Watch closely, I'll first demonstrate the jutsu that Hashirama will learn and then, Madara, understood?'' I said as both of them nodded continuously.

Raising my hand, a blue mass of chakra condensed in a sphere that rotated continuously appeared above it as I said with a calm tone and expression ''This is the Rasengan, you two know of the Bijuus, right?''

''Yes, just, what does this have similar to Bijuus?'' Madara asked, feeling puzzled about why his nii-san suddenly said this.

''Well, it's kinda simple, the Rasengan was made based on a Bijuudama, I see that you don't believe, hm?'' I said before I slowly went near a tree and as my hand with the Rasengan approached the tree, it started to tear apart before it could even hit the tree and as the Rasengan hit the tree, not only it was destroyed but the shockwaves destroyed a few trees back.

Hashirama and Madara mouths were wide open, I laughed at their expression before I continued ''You see this? I hadn't even used full power, the more chakra you infuse, the bigger the Rasengan you will obtain, however, I won't show the 'Odama Rasengan' here because the destruction may get people suspicions, got it?''

''Um! Shiro-nii-san, this ninjutsu is cool, teach me the way to learn it, pleaaase!'' Hashirama said, practically begging me to teach him, I shook my head before I explained to him the way of training and from my pouch, I gave him the necessary things.

As Hashirama went to train the Rasengan, Madara pouted and felt wronged ''Nii-san, this isn't fair, why he gets such cool jutsu but I don't? I doubt there's a jutsu cool as this one...''

''Well, well, don't get angry, Madara! Activate your Sharingan and pay close attention to what I'll do, this is a jutsu that only those with Sharingan can use because of the perfect vision that it gives, those without it can also use but their vision will be affected and with their vision affected, they'll die in battle'' I said and I did the hand signs of Chidori, I can do it without hand signs but without hand signs, he won't be able to copy the Chidori.

As Madara activated his Sharingan and observed me, I did the hand signs and soon, the Chidori condensed in my palm as I said ''Differently from Rasengan, that has a stronger destructive power that wants to destroy everything in its way, the Chidori is of a single target, focusing on the assassination of the target''

''However, just as Rasengan can be infused with the elements to have new variables, the Chidori can also be modified to have more than a single target, look at what I'll do'' I said and signaled for him to deactivate his Sharingan.

I moved my chakra as lightning shot from my entire body to all directions, Madara was relatively far so that it won't reach him but he still could feel the power as the grass on the ground turned black due to the lightning passed through it ''This is Raiton: Chidori Nagashi, as you see, there's different types of Chidori and so does the Rasengan, however, just because you copied it with Sharingan doesn't mean you can use it, you just understood how it works, you'll have to train your nature transformation and shape transformation, I guess half a month will be enough for both of you to learn these two jutsus, after it, I'll guide your normal training''

I said, leaving the determined Madara and Hashirama, that quickly started to train Chidori and Rasengan respectively, they thought to themselves that the faster they learn it, the more they'll pass time with their nii-san, since he'll guide them with their normal training, which is where their determination came from.

Smiling, I shook my head before I also started to train myself, the only thing lacking for me to advance to Kage level ninja is my body, as soon as my physical body advances to that level, so will my chakra reserves, my Genjutsu, Kenjutsu, and Shurikenjutsu had advanced to it some time ago, I also had an idea.

Lightning Stimulus, yes, I would use Raiton to stimulate my cells, fastening my growth of strength even more, don't get me wrong, it didn't take me eight years from Jounin to Elite Jounin, it took me four years to advance from Jounin to Elite Jounin peak, not ordinary ones, anyway, using it will hurt my body like hell? Yes, but do I care? No, I don't.

So after preparing myself, lightning flickering through my entire body before it ''entered'' my cells through my skin, I felt pain but endure it as my cells were stimulated and I started to training like usual as my cells were being constantly stimulated.