Academy Undercover Professor

How surprised I was when I died in an accident in my previous life and came to my senses to find out that I was born as a baby in this world. That was already 27 years ago. I feel like the years have passed so quickly. This world is a unique world in which magic dwells in the world commonly referred to as the Victorian era and Belle Époque, and sub-species and monsters are added. Wouldn't it be better if I entered the world of a game I used to enjoy or a novel I liked... This is a different world that doesn't even exist in my memory, literally without even an ointment. then I Became a teacher at the most prestigious magic academy in the empire. … Because I was mistaken for someone else.