Mugetsu transmigrated into the world of Naruto and became an ordinary Chūnin instructor at the Konoha Ninja Academy—while secretly serving as a member of the Root Organization under Danzō. Fortunately, he awakened the Teacher System, allowing him to grow stronger by guiding his students. In order to avoid becoming one of Danzō’s disposable pawns, Mugetsu threw himself into teaching with everything he has.

There's no Chapter 84, the real chapter 84 is in the chapter 85 i include this here to make the numbering consistent


Chapter 84 - Chapter 84