Goblin Slayer Side Story: Year One, Vol. 1 (manga)

Three days after hissister's death, he finally regained the will to move. In the aftermath of agoblin raid, a lone boy mourns the loss of his village, hisfamily... Five years later, that sameboy visits a city on the frontier and becomes an adventurer. Despite being the lowestrank and wholly inexperienced, the young adventurer immediately accepts a questand sets out alone to raid a goblin lair. His mind already burning with a clearvision of his calling, the legend of Goblin Slayer begins!