How NOT to Summon a Demon Lord (Manga) Vol. 18

A DANCE OF DEMONS Diablo and his companions have saved the Kingdom of Greenwood from the Demon Lord Kardia, long sealed beneath the elven wood. But at the very moment they claim victory, two more overwhelmingly powerful demons appear! To prepare for war with humanity, these demons plan to sacrifice Kardia to their master, the Overlord Modinaram, so as to bring him to a truly terrifying height of power. Diablo is the only thing standing against them…and is it possible he might wind up being appointed king of the elves, despite being a demon himself?
Series Overview: Takuma was just another awkward gamer, but a twist of fate sees him summoned to another world–in the body of a demon lord! And no one’s more terrified of the prospect than Takuma himself. He may have power, but he’s in way over his head. So he decides to pretend to be the monster he looks like, and accidentally winds up with a pair of gorgeous slaves: a voluptuous elf and cat girl. It’s not what any of them wanted, but they’ll have to figure out how to work together if they want to survive!