That Time I Got Reincarnated as a Slime: Season 4

Season overview

Role: Meticulous television and film archivist.
Task: Produce a JSON object for "That Time I Got Reincarnated as a Slime" Season 4.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown. No asterisks. No headings. No bullet points in the overview (though primer is an array). Output valid JSON only.
Content:
overview: Narrative arc of Season 4 based on the TMDB synopsis.
primer: Essential previous lore/characters/stakes based on the provided sources.
TMDB Season Synopsis: Demon Lord Rimuru's dream of creating an alliance between humans and monsters is progressing. Tempest is prospering. Granville Rozzo and Maribel Rozzo clash with Rimuru over their plan to protect mankind by ruling them. In El Dorado, Demon Lord Leon works toward his own goals. A new Hero's awakening is approaching.
Source [3]/[5]: Mikami Satoru was a corporate worker stabbed by a killer, reborn in an alternate world as a slime named Rimuru. His quest is to create a world welcoming to all races.
Source [4]: Title info.
Overview Construction:
Demon Lord Rimuru continues his pursuit of a dream to establish a lasting alliance between humans and monsters. As the nation of Tempest experiences ongoing prosperity, new conflicts arise regarding the governance and protection of humanity. Granville Rozzo and his granddaughter, Maribel Rozzo, present a direct challenge to Rimuru's vision. The Rozzo pair intends to protect mankind through a system of rule, a plan that clashes with the objectives of the Demon Lord. While these tensions develop, the narrative also shifts focus to El Dorado, where Demon Lord Leon is actively working toward his own specific goals. The geopolitical and social landscape of this world faces further shifts as the awakening of a new Hero draws near. This season explores the friction between Rimuru's inclusive world-building and the restrictive methods proposed by the Rozzo family, all while the influence of other powerful entities like Leon continues to shape the unfolding events in this fantasy setting.
Word Count Check (Overview):
"Demon Lord Rimuru continues his pursuit of a dream to establish a lasting alliance between humans and monsters. As the nation of Tempest experiences ongoing prosperity, new conflicts arise regarding the governance and protection of humanity. Granville Rozzo and his granddaughter, Maribel Rozzo, present a direct challenge to Rimuru's vision. The Rozzo pair intends to protect mankind through a system of rule, a plan that