That Time I Got Reincarnated as a Slime Season 4

In the fourth season of Tensei Shitara Slime Datta Ken, Demon Lord Rimuru's vision of coexistence between humans and monsters faces opposition from the Rozzo family, who advocate for human domination. As tensions escalate with Granville and Maribel Rozzo, fellow Demon Lord Leon pursues his own mysterious agenda in El Dorado. The looming emergence of a new Hero threatens to destabilize the delicate political landscape Rimuru has worked so hard to build.