Dorei Shoujo to Shinita Gari Kyuuketsuki

Falsely accused of poisoning a noble, Sherry heads into the forest to escape her pursuers. There, she meets a vampire who accidentally injures her in his hunger. Feeling guilty, he tells her that he'll do anything to get her forgiveness. Seeing this as a chance to rise out of misfortune, she tells him she wishes to be his bride.