Harry Potter just wanted to DIE!! He was fed up of his life, first he was abused by the Dursleys, then he was attacked by a troll, attacked by a mad man, attacked by a diary, attacked by a Basilisk, attacked by a betrayer, attacked by pretty much EVERYTHING IN THE WORLD! Then he and his friends (Ron Weasley and Hermione Granger) went to destroy this insane man's (Voldemort) Horcruxes! Not to mention said insane man was intent on killing him. THEN he destroyed all the Horcruxes, and discovered HE was one! And to make old Voldie die, Harry had to die! And after DYING, Harry came back to life to try and destroy Voldemort! AND FAILING!! So, after all that, Harry gave himself up to Voldemort YET AGAIN! He decided that he wouldn't come back to kill him, since it was practically impossible. THEN, Fate decided to play a game with him and sent him to an alternative universe, back to the age of eleven. Harry just wants to be NORMAL! But Fate won't even allow him that. So now Harry has to live with his new life. But he's going to kill Voldemort this time around. He will!
Disclaimer : I know that, with that summary, it seems as though I am crazy, but truthfully, I'm not. And if I'm not crazy, then I'm not crazy enough to admit that I own Harry Potter. Which I do not.
Kanda Kyoichi transmigrated to Konoha and became a temporary instructor at the Ninja Academy. Fortunately, he awakened the Mentor System.
By teaching others, he could earn rewards.
Thus began Kyoichi's career as a "teacher" in the ninja world.
Shisui: "Sensei's unique interpretation of the Will of Fire has given the Uchiha Clan a true sense of direction!"
Asuma: "The essence of the jade lies in protecting the people, with the advanced leading the way for the less experienced. Only then can Konoha become stronger!"
Kakashi: "He's my life mentor. He transformed Konoha!"
...
Years later, in the memoirs of Kyoichi, now the Hokage, he wrote:
"I honestly just wanted to be a life mentor!"