神域の魔法使い～神に愛された落第生は魔法学院へ通う～

A wizard from the Divine Realm who has mastered magic and proposed a new theory of magic. Just before his death, he uses reincarnation magic and is reincarnated into a world 500 years in the future! He starts a new life as a farm boy named Lucian, but in this world, the common sense of his previous life is no longer applicable and magical technology has declined――!?