I'm Looking for the Appearance of an Immortal in Konoha

In the crisis-ridden world of Naruto, wars continue and refugees are displaced year after year. Kaito Miyazaki, who traveled back in time and whose original parents died in the Nine-Tails Incident, realized a truth: Ninjutsu cannot solve the problem, and no matter how powerful it is, it cannot prevent the war that will occur in the next generation. So he decided to develop science in the world of Naruto and avoid the troubled times. Why do you have to get involved in the wars and disputes in the ninja world when you have such a good time? Why not seek out the magic of immortality and become a happy and immortal immortal? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.