Desire Dungeon [Yokubo no Tou]

As a nameless adventurer you hear the rumor about a dungeon beyond the mountains and deserts. They say that if you can reach the bottom floor, it would grant you all your desires. On a whim you decide to look into the rumor, only to find not only the dungeon, but an entire town built upon it!
With the encouragement of the townsfolk, you decide to explore the strangely straightforward dungeon filled to the brim with lovely monster girls that would never really hurt you, considering  their main source of food