Ninja School Teacher, I Can Become Stronger by Teaching

Mu Yue has crossed over into the world of Naruto, becoming an ordinary Chunin teacher at the Konoha Ninja Academy, while also being a member of the Root organization.

Fortunately, she awakened a Teacher System, allowing her to grow stronger through teaching.

In order to avoid becoming a disposable pawn for Danzo, Mu Yue works hard to teach and enhance her own strength.

"Completing an A-rated lesson for the first time, you have received a reward-Mastery of Fire Release Chakra Nature Transformation."

"Under your guidance, Shisui Uchiha has diligently trained, significantly improving his overall strength, and you have received a reward-Sage Body!"

Under Mu Yue's instruction, Shisui realizes that the village's enemies are not necessarily other great nations; they may also be within the village. Those who speak eloquently of the Will of Fire may not act according to it.

Obito sheds the title of the underachiever at the Ninja Academy, while Might Guy becomes a martial arts master even earlier...

(PS: There is a high-quality, 1.78 million-word Naruto old book with guaranteed quality.)