Blade & Bastard, Vol. 3 (manga)

'Treasure awaits in a hidden room on the third floor of the dungeon'-so claims a dangerously suspicious rumor. But Iarumas has got nothing better to do, so with Sezmar of the All-Stars in tow, he and his party head toward the mysterious reward. To no one's surprise, however, they're greeted by a sudden alarm and a large horde of monsters. And to make matters worse, Garbage falls into a trap! Will she be able to face an army of foes all on her own?!