A male engineer transmigrated to another country, and became a prince. Strikingly similar to the Middle Ages in Europe, does this position look different, but at the same time?. Witches do exist and they have supernatural powers too! The power of magic is energy efficient! Stop the witches, and unleash efficient forces! Clear diagram, battling monsters, crushing conspiracies, scaling the science and technology tree and opening the way for serious ‘farming!’.