How NOT to Summon a Demon Lord (Manga) Vol. 24

DOUBLE TROUBLE The war is over, and peace finally reigns–but an even greater conflict looms on the horizon. Our mighty Demon Lord faces an entirely new kind of trouble after he gives one ring to Rem and another to Shera. The rings are a matching pair…wedding rings, to be precise. Rem and Shera have just been wed to each other without their knowledge! Diablo must now scramble to untangle this mess before the ladies discover the truth!
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!