Spice and Wolf Novel Volume 19 is written by Isuna Hasekura.

Blissful days continue for the ex-merchant and the wolf as they pass the days together in their mountain home. Ever since Col and Myuri set off on a journey of their own, the bathhouse has been a little shorthanded so a new hire was brought on. But this newcomer is a wolf, just like Holo and the problems with her joining the staff seem endless...