Loser Genius Found Prophecy Book, Made OP Magitech Armor and Secured Hottest Princess

What the story is about

Professor Logarius, a brilliant and abrasive magitech researcher, discovers a prophecy predicting that Princess Survaia will die within seven days. After helping her survive an assassination attempt, he joins her in the impoverished north, where they use his inventions and her political authority to build up the region while confronting threats from within and beyond its borders.