I'm Just Cannon Fodder [Quick Transmigration]

Su Yi is a laid-back Demon King whose only wish is to retire. One day, she transmigrates into a book as a minor cannon-fodder character, and before long, both the protagonists and the villains are calling her a big shot. Cannon fodder one: The stepsister who died young in the domineering CEO's memories -- Has Big Brother been doting on his little sister today? (Chapters 0-30) Cannon fodder two: The villain's beautiful, troublesome mother -- The uncle of the white moonlight falls in love with her. (Chapters 31-60) Cannon fodder three: The stunningly beautiful legal wife of the female lead's father -- The tyrannical prince claims his subject's wife! (Chapters 61-80) Cannon fodder four: The male supporting character's fairy-like fiancée -- Didn't you say you'd break off the engagement? Why haven't you done it yet? (Chapters 81-105) [The Demon King's retirement life after transmigrating into a minor cannon-fodder character] Reader's guide: 1. There is a male lead, one-on-one romance, happy ending. The first world is about sibling affection; romance starts in the second world. 2. The heroine is a retired Demon King. She seems easygoing, but is actually petty and never lets anyone take advantage of her. *Please add my next book, Becoming the Male Lead's Mother in a Period Novel, to your reading list: He Xiaoyun transmigrates to the 1970s and becomes the mother of the male lead in a novel. The old woman's youthful exploits are too numerous to list: she pretended to fall into the water to latch onto a soldier from her village, drugged him and got pregnant, used her son as an excuse to demand that the family split up, and suspected her husband of cheating, then stormed into his military base and made a huge scene... He Xiaoyun used to think the male lead's father must have been cursed for eight lifetimes to end up with such a piece of work. Now that she's become that very piece of work herself, she can't bring herself to make snide remarks anymore. The one consolation is that the old woman is still a young wife, beautiful and healthy. With those two things going for her, she can accept even the worst situation. But at night, when she thinks of the "old man" from the book, a powerful, formidable figure whom the male lead deeply respects, now becoming the husband she's been forced to take over, the single He Xiaoyun starts to feel a little uneasy. * Theme: