Tenshoku no Shinden wo Hirakimashita (Light Novel)

Synopsis

When one is born as a villager, no matter how much effort they put in, they'll remain a villager and never become a swordsman. This is the world where everyone's life has been determined by the innate “job”. And a young man was summoned to this different world with a certain ability. The ability of the main character, Kaname Morimoto, was able to brilliantly "change jobs'' = job change ability!!