In a noble estate where candlelight licks at silk wallpaper and family portraits hide sharpening knives, six-year-old Liliana Bercchio burns through a fever and wakes with another woman's memories scorched into her skull. Her world matches a reverse harem novel she somehow knows page for page, and every page spells doom. The three male leads are deranged emperor-types, silent-but-deadly swordsmen, and mad genius mages who will drag her older sisters into a tragedy written in blood. The female lead who was supposed to anchor the story stands in the garden one afternoon, and then she doesn't stand at all. Liliana watches the original plot collapse in real time, and the men who should have fought over one woman pivot toward her family instead.

They seem different now. The "deranged male leads" her memories scream about don't act according to the script — they protect, they stay, they look at her sisters with something unsettlingly close to devotion. Liliana sharpens her tiny resolve into a blade: drive them out, break every engagement, and rewrite the ending before her family becomes collateral damage in someone else's dark romance. But a six-year-old with fragmented future-knowledge faces a frustrating wall — no one listens to a child who babbles about fictional characters and impending doom. When the very men she swore to expel start doting on her instead, Liliana confronts a question her novel never prepared her for. What if the safest place in a tragic reverse harem is inside the arms you meant to run from?

Also known as: 피폐 역하렘 남주들의 막내 처제가 되었다, I Became the Youngest Sister-in-Law of the Ruined Reverse Harem's Male Leads, Pipye Yeok Harem Namjudeur-ui Maknae Cheojega Doeeottda.