That Time I Got Reincarnated as a Slime (2018)

S2E18 The Demon Lords

Benimaru takes charge of his forces as they march towards Eurazania, while Youm and his companions, including Diablo, set their sights on conquering Falmuth. Rimuru cleverly outmaneuvers Clayman by relocating all the refugees from Eurazania to Tempest. As Clayman has long sought to ascend to an Awakened Demon Lord, his bitterness towards Rimuru deepens. At the same time, Demon Lord Leon, Velzard—Veldora's sister—and Guy, the eldest of the Demon Lords, find themselves increasingly impressed by Rimuru's actions.