A research fanatic who died suddenly in his lab is reborn as Roel, the son of a border baron in another world. In this magical realm that venerates the mystical and noble bloodlines, he sees a very different truth: A fireball spell? No, that's a precise transformation of thermodynamics and fluid mechanics. Alchemy? No, that's a chemical reaction at the molecular level. An incurable disease untouched by healing magic? No problem. I have homemade penicillin and microbiology.
From improving black bread that's “hard as a rock” to blasting anti-magic shackles apart with black powder; from casting forbidden spells in an instant with mathematical coordinates to declaring war on death beneath a microscope, Roel vows to spread the kindling of science across this benighted world. But when he opens a handwritten copy of the Bible, regarded as a “divine miracle,” he is horrified to discover that the “sages” who created this world's magical laws were also transmigrators from Earth?
“Truth lies within the range of a cannon, and science is where magic reaches its end.”