My Brother Never Plays by the Rules

I'm a new author, and this is my first time writing. If anything isn't good, I'll correct it as soon as I can, so please be kind. The setting is fictional. Any resemblance to real people or events is purely coincidental. Ling Shuang is a teenager from 2025 who accidentally transmigrates into a parallel world of The Grave Robbers' Chronicles because of a System glitch. But the System makes a mistake and sends her more than a thousand years too early, so it finds her another main world that opposes it and governs three thousand minor worlds. Ling Shuang can travel freely between them, and is reborn as the child of the main world's highest administrator. The System also gives her three organizations to deploy in every world. Is this seemingly harmonious family really as close as it seems? As the twelfth ancestor, how will Ling Shuang fight against it? Will she find it and fulfill the regrets she left behind in the parallel world of The Grave Robbers' Chronicles? (The protagonist has many powerful identities: she is the main world's twelfth ancestor, the head of three organizations, the leader of one of the Ten Great Families, and the mysterious K within the Shadow organization. The three organizations are Dark, Shadow, and SkyNet. Dark is even more mysterious than Shadow. Both organizations carry out assassinations for a fee, and the protagonist occasionally takes jobs too, though she charges a fortune. The protagonist is K, a mysterious figure who rarely shows up, mostly because she's too lazy to work. SkyNet specializes in gathering information: as long as you have the money, there's no information it can't uncover. These three organizations exist across all three thousand minor worlds. The Ten Great Families exist only in the parallel world of The Grave Robbers' Chronicles. To make it easier for the protagonist to kill it later, she has many titles and uses different ones in different places.)