Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka II

After Mikoto ventures into Orario's pleasure quarter on a lead to find her long-lost friend, Bell, Lily, and Welf decide to join the search! Unfortunately, Bell's hardly comfortable in such an unfamiliar environment, and after he gets separated from the group, he soon finds himself in a part of Orario he never knew existed. There, he spies a beautiful girl with fox ears and a tail, but little does he know, she's exactly who Mikoto's been looking for...

(Source: Yen Press)