That Time I Got Reincarnated as a Slime Episode 19 English Subbed

Assisted by 100 Pegasus Knights from Dwargon, Rimuru’s forces destroy the megalodons and attempt to destroy Charybdis with a full scale attack, but fail. Rimuru then battles Charybdis himself, only to discover it is possessing Phobio, and its true target is Milim. By Rimuru’s request, Milim defeats Charybdis while sparing Phobio’s life. After the battle, Phobio apologizes for all the trouble he caused, and his master, the Demon Lord Carrion, establishes a non-aggression pact with Tempest. Rimuru and the others finally discover that all the troubles they had faced recently were caused by Clayman’s harlequin.