She came back early from a business trip and discovered her boyfriend with her best friend. In one twist of fate, she transmigrated and became a total illiterate who couldn’t recognize a single character. To help her twin sister, who excelled at music, chess, calligraphy, and painting, break off her engagement, she took her sister’s place and sneaked into the household. But to her utter shock, her sister’s fiancé turned out to be a bloodthirsty vampire who took pleasure in drinking blood. Was she about to become his after-dinner dessert? No way! She had to find a way out at once!
What? Even though she was only a stand-in, the vampire had agreed to marry her anyway? Oh heavens, what was she supposed to do?
Good-looking, good-looking, good-looking
The story is pretty good, nothing cookie-cutter, and worth a read