I, Who Will Shine More Than Anyone: Shining Across the Universe

I transmigrate into my favorite novel, where I must die for my uncle's greed. Why will I sacrifice myself? No one deserves my sacrifice. So, I thought, I won't die for this kind of trashy family. I will shine more than anyone in this world. Then no one will be able to kill me for their greed. But suddenly more information is coming out about this world. I don't know what I should do.