Nani ga Tame ni Kishi wa Tatsu

There was a boy in Gerinzel, a small village in the Kingdom of Ilios. The boy's name was Cruz Linzar. Born as the second son of a poor farming family, he had nothing to inherit and felt inferior about having nothing. As he spent his days tormented by a vague sense of something, a man suddenly appeared in the empty village. The mysterious man, his name unknown and his face obscured by a mask, appeared before the boy. At his waist was a special sword, the kind wielded by a "knight."

(Source: Kadokawa, translated)