I Transmigrated into the Sister of an Invincible Protagonist

Bookworm Su Xiaorou transmigrates into a book as the cannon-fodder little sister of an invincible male lead? Sorry, she’s got the chosen one’s script. There’s no way she’s ending up as cannon fodder! A gambling-addict mom? Living on scraps? Being bullied by classmates? Her invincible big brother comes running whenever she calls and treats her like his most precious treasure. She’s the happiest little princess of the 1990s! But she only meant to latch onto a powerful backer and live comfortably as a little rich girl. So why is a future tycoon content to be her underling, an heir to a line of imperial physicians calling her Master, and even her rich, beautiful rival chasing after her and calling her “Baby Sis”? Facing the admiring gazes of everyone around her, Su Xiaorou says, “I’m super delicate. If anything happens, go find my brother!”