Goblin Slayer

Dungeon Knights are individuals who defeat monsters in dungeons that regular dungeon explorers shun, all to prevent dungeon overflows.

Aldo, having embraced the notoriously unpopular profession of a Dungeon Knight, delves into a dungeon once again today, defeating goblins. He does so to prevent a repeat of the overflow caused by his predecessor's negligence.

Only a single battle sequence at the beginning; the remainder of the story takes place in town. A fantasy... or something?