Sanctuary by Ilona Andrews

It’s not easy serving Chernobog, the God of Destruction, Darkness and Death…especially during the holidays; and especially when you’re out of eggnog and one of your pesky, freeloading mythic creatures has eaten your last cookie.
Roman would like nothing more than to be left alone, but when a wounded boy stumbles into his yard and begs for sanctuary, Roman takes him in. Now elite mercenaries are camped out on his property, combat mages are dousing the house with fire, and strange priests are unleashing arcane magic. They thought Roman was easy pickings, just a hermit in the woods, but they chose the wrong dark priest to annoy. For while Roman might be patient, he is the Black Volhv, filled with the love of his terrible god. For his adversaries, it’s a fight to the death, but for him, it’s just another day in the neighborhood.

Includes a bonus short story and more!