Release That Witch is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

A male engineer transmigrated into another world, and became a prince. This place strikingly resembles the Middle Ages of Europe, but at the same time, it seems kind of different? Witches truly exists, and they even possess magic powers! Magic powers are productive forces! Save the witches, liberate the productive forces! Open map, fight demons, break conspiracies, climb up the science and technology tree, and open the path of hardcore ‘farming’!