Available as both manhwa and novel.
Release that Witch Libera a esa bruja
Also known as: Fangkai Nage Nüwu · 放开那个女巫 · 마녀를 지켜라 · Libera a esa bruja · Release That Witch · Bebaskan peyihir itu · Fang Kai Na Ge Nu Wu · Fang Kai Nage Nu Wu · Fang Kai Nage Nuwu · Fangkai Nage Nuwu · Fàngkāi Nàge Nǚwū · Paleisk Ta Ragana · Relâchez cette sorcière · Thả Vu Nữ Đó Ra · Освободите эту ведьму
A modern-day engineer is transmigrated to a different world... Where I became a prince. His surroundings remind him of medieval Europe, but it's not quite the same. In this world, witches actually exist, and they have real magic powers! Magic powers... that can be used as a productive force! The witches must be saved. Their powers must be liberated! We must open our map, fight off demons, solve the conspiracy, and climb the tree of technology!