That Time I Got Reincarnated as a Slime (2018)

S02E09 Putting Everything on the Line

To confront his past mistakes and bring back Shion, Gobta, and his fallen friends, Rimuru shares that he was once human. His allies respond without hesitation, embracing him as if it were completely normal. Overwhelmed with appreciation for their unconditional support, Rimuru shifts his attention to the Falmuth army. He assigns Benimaru and the others the task of dismantling the devices creating the enemy's Prison Field, while he prepares to confront the advancing troops himself, intending to absorb their power to transform into a Demon Lord.