2017/72: Penric's Demon -- Lois McMaster Bujold

2017/72: Penric's Demon -- Lois McMaster Bujold

When he glanced up at the mirror, his mouth said, “Yes, let’s get another look at you.” [loc. 331]

Penric kin Jurald, scion of a minor noble house, is on his way to his betrothal when he accidentally acquires a chaos demon.
( not spoilery )