Now I'm a Demon Lord! Happily Ever After with Monster Girls in My Dungeon

Yuki awakens in a dangerous new world, reincarnated as a demon lord tasked with managing his very own dungeon. Realizing that his survival is directly tied to the fortress he commands—a realm where formidable monsters roam and peril waits around every corner—he immediately sets out to fortify his position. Within just a few days, he recruits an eclectic group of companions: a legendary dragon, an endearing pet slime, and a charming vampire girl. Yet, despite the constant threats looming over his domain, life as a newly appointed demon lord proves unexpectedly peaceful. However, tranquility rarely lasts when surrounded by such a vibrant cast of characters. As Yuki’s unconventional household expands, so do the challenges he faces. From daring rescue operations to fending off a full-scale invasion launched by a hostile human kingdom, his leadership is continually put to the test. Balancing the mundane routines of daily life with the heavy responsibilities of defending his territory, Yuki must navigate these escalating conflicts alongside his growing family of monster girls and loyal pets.