The Villainess Teaches the Fake Heiress a Lesson

She transmigrates into a book as the wicked female supporting character? Tang Shi wants to cry! To complete this incredibly difficult task, she sets out to follow the wicked-supporting-character route. Every day, she teaches the fake heiress how to behave and how to expose her wicked true nature. As a result, she goes from wicked supporting character to the whole family's beloved little darling! Her brothers all rush to spoil her, but Gu Yichen steps in first. He boldly declares his claim: "She's my wife. I'm the only one who gets to spoil her!" Tang Shi: ...