It's good but a little bit overrated not gonna lie. So we start off with aokiji, the youngest member in the Yuki clan, who secretly holds the soul of a 20yo transmigrater, being given kuzan's df from one piece he became the 'ice man' . Very interesting concept. However I don't get why you had him reincarnate like almost 50 years before Canon, he already knows the future, has a very strong cheat being his logia type df, so by the time the akatsuki start doing akatsuki things he would be so overpowered it's literally not gonna matter what they do. I mean imagine it, by the age of 7 he already beat A JONIN, the so called 'elite ninja' (underneath only anbu in power/ranking) , has mastered the majority of marines 6 powers which would normally take atleast years to do so. It's so comedic when he's this powerful and still thinks/cares about madara and danzo, they really shouldn't be an issue if you can basically freeze an entire army without breaking a sweat.
The side characters are fine by themselves, nothing too special just a little bit too generic and boring, take the kaguya clan for example (mei, her brother and father) they are so stupid it's actually insane how a clan this dumb hasn't already collapsed from within, it's also very hard to take them seriously when all they do is abuse their youngest member who managed to unlock his bone powers for no reason, just to appear 'cool' and 'different' I guess.
The writing style is somewhat decent, although you could improve the characters interaction with each other a lot.
