Mu Yue traveled to the world of Naruto, became an ordinary chuunin teacher at Konoha Ninja School, and was also a member of the Root Organization. Fortunately, after awakening the teacher system, you can become stronger by teaching. In order not to become Danzo's consumable, Mu Yue worked hard to teach and increase her strength. 'Complete the tutorial rated A for the first time and receive the reward - mastery of fire attribute chakra property changes.' 'Under your guidance, Uchiha Shisui has worked hard to practice, and his overall strength has been greatly improved, and he has been rewarded - the Immortal Human Body!' Under Mu Yue's guidance, Zhishui understood that the village's enemies were not necessarily other big countries, but could also be within the village. People who spoke righteously about the will of fire might not necessarily act in accordance with the will of fire. Obito got rid of the title of being the weakest person in the ninja school, and Metkai became a master of physical skills even earlier... (ps: There are 21.78 million words of high-quality old Naruto books, quality guaranteed)