Last four years of academia

After the Uchiha massacre, I start to focus on chakra sensing and ıryojutsu more than the others because I want to create a technique that allows me to see someone's body structure near the cellular level if it is possible. With both my knowledge about modern medical detection and scanning methods with this worlds ıryojutsu and the chakra sensing methods it is not impossible. Besides I started to train Rasengan which gives me a good way to attack and refine my chakra control to new extends. This will help me at fuinjutsu and ıryojutsu too. After I create my jutsu and combine it with my perfect memory and the fact I can use mind place for experiments (this is how I can purify my body with help of Kyuubi without dying in progress), I literally have Orachimaru's wet dream which makes experiments and gathering data from them without wasting some precious experimenting materials...

-Two years later-(mc is 10 years old now)

Finally, I create my own jutsu! I call it Uzumaki style chakra wave scanner ultimate detection jutsu... Hell no! My new jutsu named as chakra pulse, simple and elegant. I am not sharing Minato's naming sense just because he is my father. I also learn how to make Rasengan with juts one hand. Apart from that, I use chakra pulse technique on all Uchiha corpse I have later used it on Hinata, Karin and Yua to get some knowledge about Byakugan and special chakra Karin and Yua have. Here the conclusions of my two years of hard work:

1- When an Uchiha experiences a powerful emotional condition (Positive or negative) with regards to a person precious to them, their brain releases a special form of chakra that affects the optic nerves, transforming the eyes into Sharingan. Tomes on Sharingan let more light contact with retina which is also a morphed optic nerve and gained user the ''eyes of insight'' while this special chakra turns irides red and turn it a some kind of tenketstu, create a more direct way of chakra thus gained user ''eyes of hypnotism''[First half from Narutopedia and later are my 'discoveries']

2- When Sharingan evolves to Mangekyo users deepest desire at that time becomes a unique jutsu of him. This occurs as like as Izanagi. Spiritual (yin) aspect of users chakra formes a unique technique to him related to his deepest desire then physical (yang) aspect of his chakra formed his new eyes as Mangekyo Sharingan but because of the strain, this technique creates on optic nerves every usage makes the user blind bit by bit. In the case of Izanagi and Izanami, their strain is so much even EMS [I am not sure they use Izanagi/Izanami with EMS? Maybe they can take two or three uses] cannot take it and go blind from one use.

3- For Byakugan, they born with special vitreous humor which formes crystal-like transparent subject seems like whitish and they have no iris. When they lead their chakra from veins to eye it creates a special flow of chakra and activates Byakugan. Because of the blind spot in the retina, they doesn't have full 360-degree sight. Also I think Sandaime Hokage's sensing technique which he uses with a crystal ball inspired by Byakugan. [Actually, my explanations inspired by it but that's a secret.]

4- About Karin and Yua's special chakra, it is some kind of a yang release. Indra has the sage eyes (Sharingan) while Ashura has the sage body. Uzumaki and Senju both descended from him and has some of the characteristics of the sage body like all Uzumaki's have a longer lifetime and Hashirama has a body more compatible with nature-energy. Karin and her mother have can transfer yang chakra from their own body but they need lots of resting time or they can even die from overuse of it. This is how Yua died in the manga.

5- I create a technique thanks to chakra pulse jutsu of mine and my knowledge about the brain from my old world. I discover a way to read people's memories based on the texture of brain grey matter and use this to create my family in virtual reality in my old life. And chakra pulse let me see subjects brain texture so it isn't too hard to create this technique. It is just new usage for chakra pulse so I don't give it a new name.

-Two more years later-

Another two years passed and now I am 12 years old. Tomorrow graduation day and the start of the plot. I mastered my jutsus and learn some more. One of my favorite is Water characters which let you use water to forming characters on surfaces. Normally it isn't a much functional technique but the water used in technique contains users chakra just like sealing ink so it can be used for fuinjutsu without made contact which is really functional for me! Also, I learn lots of new techniques in water, lightning, wind, and yin (genjutsu) release. Apart from that, I learn body flicker jutsu (I don't wait it will be just a D-rank but it will be an A-rank hardness to reach Uchiha Shisui's mastery degree.) I pretend I still can't do bunshin no jutsu but after all my training in chakra control I can do it. So Mizuki still comes to me probably and hopefully I can get a good look at the forbidden scroll...