Tomb Raiding: Rebirth

(I haven't read the Tomb Raider novels or watched the TV series, but I have read fanfiction. If you don't like it, feel free to move on.) My name is Jiang Qingwan. I was once a saint-level immortal maiden, but one day I suddenly vanished in front of everyone. I arrived in a strange place and became a baby. As I slowly grew up, I adapted more and more to the new world. During that time, I learned that I was the daughter of the Jiang family, with two older brothers, as well as two boys who grew up alongside me: my childhood friends. They treated me very, very well. Both our families were powerful, among the most influential in this world. I grew up surrounded by the love of my parents and brothers, who protected me carefully. They said all they wanted was for me to be happy every day, and that they would take care of everything else. I knew they meant well, so I agreed to their faces, but privately I helped them deal with their other problems. They all knew. Whenever they came to talk with me, I told them, “I’m all grown up now. I can protect you, and I know what I’m doing, so don’t worry.” They didn't refuse, because they knew I had my own forces. Still, after that, they hired plenty of bodyguards to protect me. On the day of my eighteenth birthday, they gave me an estate. I loved it, and later moved in. My two childhood friends came with me. But one morning, a month later, I discovered that a lot of people had appeared on the grounds. They said they were from the Nine Gates…