Kurogitsune to Nie no Miko

A Japanese-style marriage fantasy between god and human begins! A girl was raised as a sacrifice to the mountain god, Black Fox. The girl had hoped that the mountain god, who is feared as a fierce monster, would take her life mercifully. However, when she finally meets the Black Fox, he tells her that he will not be eating her...?

(Source: Betsufure, translated)