Kaguya was a real stunner in real life, like a mature bunny ready to be eaten. Her sweaty white hair rested on her forehead as she was exhausted and resting after her final battle. This point aside, it seems that this is an AU of Naruto since the infinite Tsukuyomi was present and all living beings were caught in the god tree roots.
This was definitely a great opportunity.
Instead of talking non-sense, I launched a basic ice spear spell powered by Prana to see if her Rinne-Sharingan could absorb its energy. As expected, her Preta path didn't work so she had to resort to the repulsion of the Deva Path to break them.
Her shocked face was quite cute, but that didn't stop me from bursting with speed and slashing her down with my sword. She couldn't react fast enough to dodge and had to move to her dimensions, which was exactly as I planned.
Activating my Tenshingan allowed me to see her true body weakness no matter the dimension she was hiding in while allowing my sword force to slash through dimensions and directly reach her body.
The little mama-boy hiding in her sleeves jumped out to protect her, but expecting that crafty troublemaker, I had Alfred use a simple displacement spell to switch Kaguya and Black Zetsu position, which allowed me to sever her right arm.
Bringing them in front of me using a summoning spell, I used the time in which Kaguya was still stunned from the pain of losing her arm to rip Black Zetsu apart using a Thorny rock spell. A good riddance.
The deafening cry of pain from the white bunny and the subsequent Shinra Tensei pushed me far back. This was when the battle truly began.
Her show of madness began with a few tens of shots of the famous bijuudama. I cleaved most of them and redirected their resulting explosions away from the tree roots. I still had a use for them after all.
The following 5 minutes were mostly me dodging or redirecting her attacks while I laid a few timed trap spells, which all activated at the same time, sealing her movement, and allowing me to review her memories.
I ignored most of her memories, except for a few important bits about the Otsutsuki clan and her usage experience of chakra and of her eyes.
This allowed me to know that she was aware of the pending arrival of her clan members, meaning that creepy guy with a god-complex and his lackey.
I had no further use for her, so I immediately released the Jyuubi from her hold while casting an absorption spell to place it in myself. In the meanwhile, her beautiful head was already rolling on the ground as her body slowly collapsed to the side.
The process of absorption took three days since I was continuously casting purifying and mind-wiping spells to erase any trace of will that existed in the ten-tails, just to be safe. I finished the process with a sealing spell reinforced by Prana to firmly hold it in my dantian.
The effect was nearly instantaneous as soon as I became the new jinchuuriki. The first thing I noticed was that by using the new enormous amount of chakra as a base, my conversion rate of Prana reached a terrifying 90%, substantially increasing my strength.
The second one concerned my eyes since I felt them itching as a new mutation was added to my DNA. That should be the Rinnesharingan of the Jyuubi, but since I already had an eye power based on a chakra fruit, it could only alter it slightly while giving a few of its basic ability.
Amongst them were Genjutsu, an eidetic memory, the ability to see chakra flow and a 360-degree field of view. My iris now had three captivating tomoe swimming around them.
I was pretty satisfied with that since my eyes were already strong, to begin with. Moreover, the real thing I wanted to try was the Ten-tails Chakra cloak and the subsequent sage mode.
Maybe it was because I used Prana to activate it, but my Ten-tails cloak felt like it was alive. It responded accordingly to what I felt, so when I tried firing a spell at myself, the cloak automatically protected me by projecting a Prana shield. It was like a mix between Susanoo and Gaara's sand.
The look was pretty badass too, it completely enshrouded my torso and legs in black with a few white lines tracing my body while covering me in a long Hokage-style cloak made in what looked like white, sticky flames with a black underside.
I also gained the famous Truth-seeking balls, 10 of them, and since they were powered by Prana, they were at least 4 times as strong as the chakra one while also being more malleable. I combined them to form a condensed 4-meter long sword, and I felt pretty confident in cleaving a mountain in half.
Attaining sage mode was pretty easy since I already reached the 'one with the world' stage and the Jyuubi further increased my control of World energy (Nature Chakra). My body's attributes greatly increased while any power I used required far less energy on my part since I was using the world's.
My personal 'six path sage mode', or as I call it, True Sage mode, also changed my cloak. Nine black tomoes were around my collar on the upperparts, the kanji for 'Truth' was written in in the middle and black flames were burning at the bottom.
With all of that ready, I naturally shifted my attention to the natives of this world.