My Senior Sister Knows Magic

This is a world where science and magic coexist.Here, some pursue powerful magic, while others seek eternal truth.A science and engineering genius transmigrates to this world, starting as a small librarian. With magic in his left hand and truth in his right, he kicks open the door to the new century.Some call him the pioneer of magic, others say he is the foundation of science.And there are those who describe him like this:In the new century, Blair is the symbol of evil.