That Time I Got Reincarnated as a Slime (2018)

S01E15 The Jura Forest Alliance

After the conflict with the Orcs, discussions about the future have commenced. During the gathering, Rimuru discloses his commitment to take on the sins of all the Orcs, a promise made to Geld, the Orc Disaster. This revelation stirs a reaction from the Ogres and Lizardmen present, who are taken aback by the weight of Rimuru's vow.