I Only Wanted to Protect My Sister, but Became Everyone's Darling

[Transmigrate into a book, one-on-one romance, fiercely protective big sister, everyone's favorite, multiple male leads, complete] Si Yingxia wakes up to find she has transmigrated into a serialized novel as the wicked female supporting character. Her younger sister, Si Yinghua, is the beloved heroine, a frail girl of mixed immortal and demon blood. Looking at the little bundle of cuteness in front of her, Yingxia has no desire to bully her. All she wants is to protect her sister with everything she has. So, to help her sister enjoy the life of a cherished heroine, she follows her around, doing her best to set her up with the male leads. But as she plays matchmaker, how is it that the male leads all seem to fall for her instead? No, no! She's the wicked supporting character! How could she steal her sister's life as the heroine? When Si Yinghua's immortal-demon bloodline finally awakens, the group enters the Upper Realm, and the mysteries slowly begin to unravel. Si Yingxia stares at her bargain husband in a mask and falls into deep thought. Pu Zhengyang: Don't look at me, honey. I'm so ugly! (Clutches his mask) Si Yingxia: Take it off, or you're sleeping alone tonight. Pu Zhengyang: All right, all right! Everyone in the Upper Realm finally understands: their bloodthirsty lord is actually henpecked.