The Mighty Zero-Magic Mage: I Knew Something Was Wrong With Your Theories On Magic!

"Zero Magic? That doesn't matter to me. I'm going to save my sister!!" Abel is a boy who's always dreamed of being a mage. He is devoid of any magical powers but stays dedicated to his studies of magic to save his sister from a curse placed on her by a powerful deity. All it took was one old book to change his life forever. In this book lies a powerful word: "Science". And so begins a new adventure fusing the fundamentals of Magic and Science... the path to becoming the most powerful Mage!

(Source: MangaPlaza)