That Time I Got Reincarnated as a Slime Season 4

The Demon Federation, which held the founding ceremony and established diplomatic relations with other countries, began to move towards realizing the "Human-Demon Co-Prosperity Sphere", a world where humans and monsters can live together. Overcome the barriers between races and join hands to move towards a prosperous Demonic Federation. However, behind this, some people see the rise of Demon King Rimuru as a danger. Among them are the former "brave" Granbell Russell, the leader of the five elders of the Kingdom of Siltros, and his granddaughter Mamalian Bell Russell. Granbell and Mariambell, who advocated the idea of ​​protecting humanity through domination, plotted against Rimuru. On the other hand, in the golden land of Eldorad, Demon King Leon also began to act for a certain purpose. The hero who is the guardian of mankind, and the demon king who dominates the world. Amid various calculations, a "brave" is preparing to wake up