Western Fantasy: I Went from Being Ordinary to Changing the World in Another World

Traveling through the Western fantasy world, he became the third son of a northern earl. He had no cheats or cheats, but only had strong magic perception and mathematical knowledge similar to magic formulas. About the second sister Laila: Could it be that my second sister is the protagonist of this world, with her genius magic talent and her physique that constantly encounters troubles and opportunities. This continent is called Serafim, a world where magic is paramount. There are various races. There are constant conflicts between them. Even characters who were sealed and seriously injured in ancient times seem to be bringing some changes to this world. (There is a simple background story related to the work)