This Ninja Is so Stable

Chen Changsheng traveled through Hokage and became an orphan living in the vortex of Konoha, and obtained the long-term living system! The longer you live, the stronger you become! He originally planned to stay in Konoha for the rest of his life, but Sarutobi Hiruzen asked him to come out as the teacher of Class 7. Who are the people in Class 7? Uzumaki Naruto, my brother of the same race carries with him the Nine-Tails that destroys the world. Uchiha Sasuke, Orochimaru's pet peeve. Haruno Sakura, the endless love brain All of them are troublemakers, and trouble also means danger! Uzumaki Changsheng: "Sandai, I'm really not good at teaching students." Sarutobi Hiruzen: "I have an S-level mission..." Uzumaki Changsheng: "... I'll go." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.