I'm a Swordsman in the Wizarding World

In this world, on the tenth birthday of each family's children, they will go to the temple to perform a magic activation ceremony to select talents, inherit the family's magic brand, and pass on the bloodline. Everyone has more or less magical talent. There are almost no people without magical talent. Everyone is a magician. People without magical talent will be regarded as bastards and trash, and the family will be shamed. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.