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

I’m a demon lord?! Blessed with unlimited freedom in this new world, it’s time to live the good life building the perfect dungeon! Reborn in another world as a demon lord, Yuki plans to use the incredibly handy online store that is the DP Catalog to create a super sinister dungeon where he can live the easy life! But the moment he starts his new life, he encounters the unimaginably strong Supreme Dragon. Just when he thinks the end is already nigh, things take a bizarre turn in his favor! The Supreme Dragon, who turns out to have a major sweet tooth, transforms into a lovely young girl hell-bent on freeloading off him. And she’s not his dungeon’s only new resident. Within days, he summons an adorable slime and rescues a sweet little vampire girl too! While taking care of his new family, Yuki experiments even more with the Catalog by learning how to create his own weapons. Their idyllic days don’t last long, though, as an unexpected menace appears...

Reborn as a demon lord in a fantasy world, Yuki is living his best life without any restrictions! Every day is full of fun and joy when he’s with Lefi, the freeloading Supreme Dragon; Fluffrir, his pet fenrir; Iluna, his vampiric little sister; and Shii the slime. But one day, Iluna suddenly vanishes. Realizing humans are behind her disappearance, Yuki heads up a rescue mission and, with Lefi’s help, raids the nearest settlement in search of the little girl. He won’t let anything or anyone ruin his idyllic second life! Yet dastardly human designs are destined to be a thorn in his side when the human kingdom’s crown prince and his greedy supporters set their sights on the Demonic Forest...

Reborn as a demon lord in a fantasy world, Yuki’s hard at work building the castle of his dreams. A mighty demon lord needs an equally mighty abode, after all! As he expends colossal amounts of brain power, magic, and effort to bring his perfect castle to life, an intruder stumbles into his super chill, super strong dungeon—one who just so happens to be a crybaby tomboy hero who’s been ordered to defeat him! Hijinks ensue as Yuki deals with her in his own unique way, and after they clear the air, he and Lefi tag along when she heads for Alfiro. Though he’s intent on playing the tourist, Yuki has another reason for his impromptu visit: to find out who’s behind the attacks on his dungeon. A surprise reunion and dastardly political machinations await the antihero demon lord!