That Time I Got Reincarnated as a Slime (2018)

S2E8 Hope

Rimuru discovers the malicious plots of Clayman and the Kingdom of Falmuth, grappling with the painful reality that he can never revive his fallen friends or restore their tranquil existence. Just as despair threatens to overwhelm him, Eren shares a fairy tale that sparks a flicker of hope. Although the odds are slim—only 3%—Rimuru learns that by absorbing the souls of 10,000 humans, he could ascend to become a Demon Lord and potentially resurrect his comrades. With Falmuth's formidable army of 20,000 advancing on Tempest, Rimuru clings to this hope and resolves to pursue his transformation.