The Assassin Heiress Returns

Ten years ago Shen Qiange fought with her father and left the house. She survived overseas in a nest of criminals and came out of it as the world's number one assassin, known on the lists as Blood Moon. Her father's death and a summons from her grandmother bring her back to the capital. Her second uncle's branch of the family has been positioning itself for the head-of-house seat for years and treats her arrival as an obstacle, so she is insulted at dinner, cut out of meetings, and set up in small ways designed to make her look unfit. They are still working from a memory of the girl who ran away. She lets the first rounds of it happen while she reads the room, then starts taking the family apart branch by branch to get the seat, and the deeper question underneath all of it is who actually ordered her father's death.