My Senior Brother Has a Screw Loose: Ink-Stained Bamboo

Yun Xiao joined the Xiaoyao Sect. She once said, "Both my parents are dead, so I want to learn some skills to protect myself." That doesn't seem to be the whole story. Because at the Xiaoyao Sect, she makes a habit of messing with her senior brother. ----Have you ever seen a girl wrap her arms around her senior brother's neck? -----No. ----Have you ever seen a girl constantly mess with her senior brother? -----No. -----Have you ever seen a girl regularly cook terrible food for her senior brother? -----No. ------Have you ever seen a second senior brother fall for a girl who constantly messes with their senior brother, making both of them ecstatic? ------Not that I can think of. Attention, attention: the CP is undecided, and the protagonist is not the senior brother. In short, it's a story about a girl and her senior brother: sweet at first, then painful. The heroine is a scheming, obsessive, and ruthless yandere, with her moral compass utterly destroyed. This is the story of a saintly girl turning into a scheming man-eating flower~ The author's tastes are unusual, so proceed with caution if that's not your thing.