The Demon Concubine's Self-Rescue Manual

【Transmigrate into a book + strong female lead + wish fulfillment + romance options + silly, lighthearted tone】 Jun Yiru transmigrates into a book as a stunningly beautiful villainous consort, and even worse, she’s a cannon-fodder character. The city falls for her, the kingdom is destroyed because of her, and war erupts everywhere, leaving the people in misery. So she sets out on a path to defy fate and rewrite her destiny. The stronger her enemies, the stronger she becomes. Her morals are questionable; she’ll kill gods who stand in her way and slaughter Buddhas who try to stop her.