Other World Chimera
Yin and Yang

Tomoka is seen sitting cross-legged on her bed. He was thinking about why he failed. Does it have anything to do with his body? Perhaps his strange eyes had a hand in it. The problem was that he didn't have much to do at the moment. In theory he should have been able to use a jutsu but unknown variables have given rise to his ugly face. 

'For starters, I will compare Naruto to other shinobi. He was able to use a jutsu with enough ability to use it, skipping almost any hand gesture. He could also make many clones thanks to his large chakra reserves. However, he was stupid for not being able to use a simpler jutsu like an ordinary clone jutsu. 

I believe the reason for this was stated in the anime but I don't remember very well what it was! Very frustrating. By the way, if I compare myself to Naruto, there are many things I have that he does not have as a novice parent. Anyway, I have this weird body, my Kinegan and I don't know what else…

Well it might be easier to think about what I have in common with him. We are both Uzumaki although my situation is a little different. In addition we both have Kurama which is the reason for our enormous chakra reserves. What do you think Kurama?'

[Hmmm well I and Naruto Kurama are different. Remember I am entirely composed of Yin chakra and Naruto part of me is made of Yang chakra] Kurama's statement awakens the lost memories of Tomoka's mind.

'That's her! That's what I forgot! The reason why naruto could not use cloned jutsu was because the jutsu was yin based. Naruto's chakra is so influenced by Yang Kurama that his chakra is so heavily charged with Yang. If we apply that situation to me…'

[That means your chakra is heavily Yin-charged.]

'Really! The shadow clone jutsu is a Yang based technique so if we follow that logic, my loaded Yin chakra is incompatible with the technique. Now that I know of this flaw, I can think of a way to fix it.'

[But? I can clearly feel that you're not sure about that]

'Well, the simplest way to fix this problem is to increase the power of Yang in my chakra, but it's not that easy. Yin is produced by the mind and soul, which is produced by the body. That is, a stronger body produces more yang chakra. However, you have seen my training, there is no way for me to improve it any further.'

[Yes, I'm really amazed that you haven't torn your body apart.] 

'Yes, after some thought, naruto has an abnormal healing rate. It was not that he would recover in battle but that his wounds would heal faster. That healing factor was also attributed to his Yang-charged chakra. 

[Yes, there must be some kind of flaw in that. After all, the imbalance in Yin and Yang is not good]

'Said the fox who was currently a hundred percent Yin. After all, if I think about my past and everything that happened with me, I can guess. Kurama didn't you notice that the speed at which I gained physical strength is normal'

[I wouldn't call your growth rate normal but I can guess what you mean. To be honest I was also surprised I thought that with your crazy training and strange healing and adaptation factors you would become a monster in no time.]

'Yup, I think the same but not like that. My growth rate is the same as if someone without healing or adaptation factors did my training. My guess is that the heavy Yin-charged chakra inhibits my physical growth while increasing my mental capacity.

Waitaminute! If we apply the same concept to Naruto then…'

[That would explain why he was so stupid. I mean, I've never met that guy but from what you're telling me he sounds like a moron]

'I understand. I guess I should thank Minato for sealing you inside me instead of the other Kurama. Although with my adaptability and healing, I will become a complete monster in terms of physical abilities, I do not want to be a fool.

Well Naruto should be wise when he gets older. I mean he did become Hokage. That would make me believe that the downside subsides as one grows up. That would make sense. The brain is a part of the body so the Yang side must also repair it. If we flip the script then the Yin side enhances the soul which in time will repair the body'

[Well you solved the mystery about that but what are you going to do about the Shadow clone jutsu]

'I don't know'