When overworked office drone Xiaoshuai transmigrates into Kakashi Hatake, the man who’s become the unit of measurement for chakra, he gets a headache just thinking of all those iconic fights where Kakashi only managed a draw: against Zabuza Momochi, Deidara, the Immortal Duo, Pain, and so on. As the new Kakashi, he’s determined never to settle for a draw again.
Zabuza Momochi: “What happened to the water prison counterattack plan?”
Kakashi, crushing the Executioner’s Blade with his bare hands: “Times have changed, Zabuza.”
Minato: “You even cut through a Tailed Beast Bomb. My Flying Wheel Popsicle, the Spinning Jiraiya Double-Style Pill, can’t compare to your Chidori.”
Jiraiya: “Kakashi, so you’re the Child of Destiny I’ve been searching for all along.”
Pain: “You’re more suited to becoming a god than I am.”
Kaguya Otsutsuki: “You think you can harvest me?”
Kakashi: “Take it off!”
Kakashi: “Who says Hatake Fifty-Fifty can’t become a well-rounded battle god?”
I don't know what netizens think. Anyway, I personally think that even without Black Zetsu's conspiracy, the Ninja War would still have started. After all, in terms of anime, Danzo and the Third were the biggest contributors to the outbreak of the Fourth Ninja War.
Well written, you can read it