Traveling through the world of Naruto, you get a library of heaven. The library allows the protagonist to see clearly the strengths and weaknesses of anyone, and even integrates various talents, various escape techniques, and various blood inheritance limits, so...
"Kid Sasuke, that's not how the Sharingan works. You still have a lot to learn! Do you want me to help you evolve into a Mangekyo?"
"Xiao Li, come here, let me teach you an Eight-door Dunjia that won't harm your body at all!"
"Kakashi, do you want to learn Kamui and Susanoo? Come, become my disciple and I will teach you!"
"Hey, has Orochimaru invaded Konoha? Xiao Li, go ahead and teach him a new life!"
"What? Pain is here too? Are you here to invade Konoha? Oh, no? So you are here to beg me to teach them ninjutsu? Haha, let them kneel outside for three days first."
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.