At the beginning, he saved the second generation Hokage

Story of: At the beginning, he saved the second generation HokageYun Fei traveled to the Naruto world and saved the second generation of Hokage at the beginningHe tricked the Second Hokage into betrothing Tsunade to him, and when he was sixteen years old, he returned to Konoha to be a teacher. From then on, the Konoha Ninja Village was in chaos.Third Hokage: Yunfei, as long as you behave yourself, I will agree to anything you ask for!It just so happened that the system asked him to return to Konoha Village and kill Konoha’s senior advisor, Danzo Shimura!So, the next day, Shimura Danzo died tragically under the office building of the Third Hokage...