Tian Chuan and the shinobi world can’t learn any ninjutsu. If you disagree, go look through the textbooks from elementary school to senior year, then try taking the college entrance exam yourself.
Anyway, he can’t learn ninjutsu. Luckily, he has the Trait Enhancement System. It only gives him three traits, but he even puts himself among them.
And so, an ultimate taijutsu technique that makes everyone in the shinobi world tremble is born. A four-meter-long Six Harmonies Spear silently bears the brunt of it all.
Rock Lee: “Tian, you’re my lifelong rival, the opponent I’ll challenge even if it means burning through my youth... No, no! My greatest rival is Neji, Neji Hyuga.”
Rock Lee covers his backside and scurries away, fidgeting.
Uchiha Madara: “You want to remember... Ah! My butt!”