Death March to the Parallel World Rhapsody, Vol. 3 (light novel)

Twenty-nine year old Satou had only closed his eyes
for a brief nap at work, but when he opened them he found himself in a game-like
alternate world. Fortunately, thanks to some excellent luck, his level is high
and his wallet is full. After successfully saving the elf girl Mia from the evil
Zen, he's set off on a journey to accompany her back to her village. Satou is
enjoying his break from work and touring a brand-new world, but such a journey
couldn't possibly end without a little adventure, right?