Naruto: Reborn as Kakashi, I Become King of the World

[Hokage + Kakashi + massive chakra reserves + a power-fantasy rewrite of the plot + joining forces with Obito and Naruto in the Shinobi World War]

I transmigrated and became Kakashi Hatake, inheriting the devastating memories of personally killing my beloved, Rin Nohara. From the start, I was overwhelmed by the sorrow of the entire world!

Just as I was falling into despair, I came across my father's keepsake and unlocked the golden finger [Chakra Nature Compression]! From then on, my chakra reserves were endless! The Copy Ninja, Kakashi Hatake, who always fought to a draw? Those days were over! With infinite chakra, I could perform any ninjutsu with ease, and unleash my ultimate techniques as casually as a basic attack!

In this life, I'll personally turn around every tragedy that once left me heartbroken!

Obito, Konan, Itachi... I'll put an end to your tragedies!

The Fourth Shinobi World War, Madara Uchiha's resurrection, Kaguya's arrival? I'll join forces with Naruto and show the world just how terrifying Kakashi with infinite chakra can be!