Civil Servant Guide to Another World

You guys go through mountains of swords and seas of fire, I'll take the exam and then lie down! He was on his way to buy a beer to celebrate his acceptance as a civil servant when he was suddenly kissed by Mr. Truck. Reincarnated as the legendary son of the leader of the war clan, Denborg Brad, who caught demons at the age of 8 and dragons at the age of 12. Trained in a Spartan style by his father who was a muscle monster, his daily life was inhumane. "I must leave this place far from peace!" Safety is the first priority! Therefore, he chose to be a civil servant of the empire! Can Denberg really become a civil servant and live the peaceful and stable life he wants?