That Time I Got Reincarnated as a Slime Vol. 8 (manga)

After his humiliating defeat at the hands of Milim, Demon Lord Carrion’s follower Phobio seethes with anger. His negative emotions make him a perfect vessel for the legendary Charybdis, so Footman and Tear of the Moderate Harlequin Alliance pay Phobio a visit in the hopes of summoning the grand beast. Before long, Rimuru receives a report that Charybdis has indeed come to life, and is heading for Tempest. Where first there were just rumors of this conspiracy, now there’s the telltale smoke of an approaching battle …