The capricious god's blasphemous favor

Saya, a former orphan who has been mistreated by her family, is faced with a marriage proposal from a hideous lord upon turning sixteen. And to make matters worse, she's to take her sister's place. In despair, Saya runs away, hating God and destroying the village's important shrine. But then, a beautiful god appears before her, and for some reason, takes a liking to her…!?