My Junior Sister Can't Possibly Be a Sweet, Airheaded Fool

[Monster-slaying, leveling-up, and romance] //My Junior Sister Can't Possibly Be a Sweet, Naive Fool// - Not a strong female lead!!! Not a wish-fulfillment story!!! Slow-burn melodrama!!! Written for my own enjoyment!!!- Mei Liangyu: My junior sister spends all day with a bunch of top-tier villains. She smiles brightly and adorably, and speaks so softly, but she must have something up her sleeve. There's no way she's a sweet, naive fool in a circle of villains. - Six hundred years ago, the stars shattered over the Ancient Xuan Continent, and a warning was proclaimed to all: five people who would bring about the world's destruction would unleash strange flames upon the continent, burning every living thing to ashes. Find these five destroyers at all costs and save the countless lives of the Ancient Xuan Continent. From the start, Yu Sui finds herself as one of the five destined destroyers. Looking at her tiny fists as a baby, she bursts into tears: Hey, wait a minute, what's wrong with a story where I'm up against the whole world? =A= ① Not a strong female lead!!! Not a wish-fulfillment story!!! Slow-burn melodrama!!! Written for my own enjoyment!!! ② Monster-slaying, leveling-up, and romance. It's a long story, so there's a lot of male lead. The male lead is her senior brother, Mei Liangyu. Includes flashbacks. ③ My own take on fantasy. The writing is colloquial, so if that's not your thing, please don't force yourself to read it. ④ The female lead is [probably] sweet on the outside, dark within. Theme: Take responsibility for your own affairs.