That Time I Got Reincarnated as a Slime - Season 4 Episode 9 -

Rimuru and his expedition team have arrived at Amrita, the ancient ruins located beneath the castle of Clayman, the Demon Lord they once fought. From analyzing magical formula to examining ancient murals, the group proceeds with their expedition, driven by their curiosity. Meanwhile, on the surface, Maribel is closing in on them. Rimuru, the Demon Lord who seeks coexistence with humanity, and Maribel, who advocates protecting humanity through domination—the two, each holding fast to their own unwavering convictions, finally come face to face.