Maou-sama no Machizukuri! ~Saikyou no Dungeon wa Kindai Toshi~魔王様の街づくり！～最強のダンジョンは近代都市～; Dungeon Builder: The Demon King's Labyrinth is a Modern City!; 마왕님의 마을 만들기! ~최강 던전은 근대도시~; Mawangnim-ui ma-eul mandeulgi! ~choegang deonjeon-eun geundaedosi~; 打造魔王大人的城镇！ ~近代都市就是最强的地下城~; 打造魔王大人的城鎮！～近代都市就是最強的地下城～; Dǎzào mówáng dàrén de chéngzhèn! ~Jìndài dūshì jiùshì zuì qiáng dì dìxià chéng ~; По проекту дьявола: современный город сложнее любых подземелий; สร้างเมืองกันเถอะค่ะ! คุณพ่อจอมมาร!

Beings that create and control monsters and demons, beings that build and reign over malicious labyrinths, the chosen individuals to possess an overwhelming Unique Skill… They are the Demon Lords. Demon Lords entice people to come to the labyrinth they’ve built and eat the people’s despair as their nourishment. However, Creation Demon Lord Procell has decided that he will obtain people’s hopes and not their despair as nourishment, and built a happy town instead of a malicious labyrinth to collect human beings. This is the story of an eccentric Demon Lord, with all its ins and outs.