The Rising of the Shield Hero has begun its third season, and so far, the fantasy isekai adventure has been a bit of a mixed bag. On the plus side, protagonist Naofumi Iwatani has come a long way as a hero; however, Naofumi can still go further in Season Three — and so can his enemies. Naofumi has faced a revolving door of villains in the anime's three seasons, and it's past time for Shield Hero to finally settle on a demon lord.
Source：https://www.cbr.com/why-the-shield-hero-anime-needs-a-demon-lord/
