I Was Just Doing Overtime Service At The Dungeon, But I Ended Up Pretending To Be A Wandering S-Rank Explorer

Hinata Watari is an ovenNorked office drone buried in endless unpaid overtime. Convincedrnthat "moving his body will spark better ideas," he takes an unusual detour on his way home-into arndungeon that suddenly appeared in the city. There, he vents his pent-up frustration by usingrnmonsters as punching bags while casually exploring the labyrinth. Butjust as he's basking in thernthrill of mowing down weaklings, he stumbles upon a beautiful girl under attack from a fearsomernmonster! That fateful encounter turns Hinata's dull, exhausting life upside down. Thus begins arnrefreshing tale of modern-day dungeon adventures and exhilarating battles!