Spice and Wolf, Vol. 1 (light novel)

The life of a traveling merchant is a lonely one, a fact with which
Kraft Lawrence is well acquainted. Wandering from town to town with just
his horse, cart, and whatever wares have come his way, the peddler has
pretty well settled into his routine-that is, until the night Lawrence
finds a wolf goddess asleep in his cart. Taking the form of a fetching
girl with wolf ears and a tail, Holo has wearied of tending to harvests
in the countryside and strikes up a bargain with the merchant to lend
him the cunning of "Holo the Wisewolf" to increase his profits in
exchange for taking her along on his travels. What kind of businessman
could turn down such an offer? Lawrence soon learns, though, that having
an ancient goddess as a traveling companion can be a bit of a mixed
blessing. Will this wolf girl turn out to be too wild to tame?