Great stories like Narutos Pain Arc can have a palpable impact not only on the fans who read them, but also on the industry, medium, and culture that they are a part of. What is less recognized, however, is that these stories can also profoundly affect the authors who write them. This was exactly the case for Narutos creator, Masashi Kishimoto.
https://screenrant.com/naruto-forgive-pain-dilemma-kishimoto-lose-sleep-most-controversial/