Maou ni Natta node, Dungeon Tsukutte Jingai Musume to Honobono suru  

魔王になったので、ダンジョン造って人外娘とほのぼのする, Now I'm a Demon Lord! Happily Ever After with Monster Girls in My Dungeon, 魔王になったので、ダンジョン造って人外娘とほのぼのする（旧題：自由に暮らしたい魔王黙示録 ）

Yuki is reincarnated as a demon lord in another world and given the responsibility of managing a dungeon. despite facing powerful monsters and danger at every turn, he begins to gather allies and strengthen his defenses. in just a few days, he encounters a legendary dragon, an adorable pet slime, and a vampire girl. to his surprise, life as a demon lord in a constantly threatened dungeon is surprisingly peaceful. however, with such a diverse group of characters (and more on the way), yuki knows that trouble is inevitable. he must navigate daily life, his new responsibilities as a demon lord, and the growing family of monster girls and pets he has acquired. will he be able to handle the challenges that come his way?

Maou ni Natta node, Dungeon Tsukutte Jingai Musume to Honobono suru has been published digitally in English as Now Im a Demon Lord! Happily Ever After with Monster Girls in My Dungeon by J-Novel Club since August 23, 2022.