Maryoku 0 de Saikyou no Daikenja: Sore wa Mahou dewa Nai, Butsuri da!

On his deathbed, the Great Philosopher expressed remorse, as he was never able to learn magic.

Five hundred years later, he was reborn as Mazel Loran, the son of a feudal lord. His family believe him to be a late bloomer in terms of his magic, but also think he's the next incarnation of the Great Philosopher. But Mazel has a secret that nobody else knows: while he does not have any magic, he has experience with "physics"!

(Source: MU)