Among the 80,000 ninja in the ninja world, Jiraiya is the only writer, and he's a pervert.
Among the 80,000 ninja, Orochimaru is the only scientist, and he seems to be a pervert too.
Among the 80,000 ninja, the only artists are still Deidara and Sasori, and they're both perverts as well...
So the young man from China who transmigrated into Naruto doesn't want to learn ninjutsu. He only wants to write novels and film spin-off series, spreading culture and benefiting the masses.
"Shana's Sharingan," "JoJo's Bizarre Ninja Adventure," "This Pain Is Clearly Overpowered, Yet He Acts So Cautiously"...
Ahem... The first sentence above was a lie. Old man Sarutobi, if you want me to hurry up with the next chapter, bring me a ninjutsu scroll in exchange! Are you giving me one or not? If not, I'll use the Transformation Jutsu to turn you into a girl!
(This is a comedy.)