It's probably a story about a max-level metaphysics expert pretending to be a pitiful little thing, raised by three ghosts who dote on her, and living it up while hiding behind her secret identity.
The blurb is tentative. I'll revise it when I have time.
When Lin Xi returned to her wealthy birth family, she learned that she was the pitiful real heiress in a book, raised by a grandma who collected junk... Wait, she turned to glare at her three ridiculously handsome brothers. "Where's my grandma? Did you eat her?"
Her eldest brother, covered in wounds: "I just want my body back. I wouldn't eat an old lady."
Her second brother, a flirtatious ghost: "I only like beautiful women. I wouldn't eat an old lady."
Her third brother, wearing an apron: "I only like cooking. I wouldn't eat an old lady."
Even their dog-yokai second uncle, passing by, shook his head and said he hadn't eaten her.
Later, would her parents favor someone else, her fiance reject her, and her jealousy make her fall into ruin, get pregnant before marriage, and die in childbirth with sextuplets?
Lin Xi thought that was ridiculous. She could earn over a million for catching a single ghost, and her clients ranged from top-tier stars to tycoons worth tens of billions.
Jealous? Ha! There was no way she'd get pregnant before marriage! And sextuplets, for crying out loud?
At a high-society banquet, Lin Xi met a man who looked exactly like her eldest brother. A vicious ghost that had crawled out of hell lurked in his shadow.
In full view of everyone, the man walked up to her. "I hear you've been dumped by your fiance, Miss Lin. Why not marry me instead?"
Lin Xi lifted her face and smiled. "Sure."
Afterward... she frantically called her three brothers, her dog-yokai second uncle, and all the ghost sisters who wanted to be her second sister-in-law. Come on, let's go kill him!
Everyone trembled. "We wouldn't dare. We wouldn't dare."
Bonus scene: To be added later.
[The heroine is irresistible, wild, and unrestrained. A satisfying, goofy story with a strong heroine and an even stronger hero, featuring melodramatic forced-love tropes.]
Theme: The world is beautiful.