The Sister I Knew When I Was Young Seems to Have Become a Yandere

(Single heroine, no rebirth, no system, yandere, campus city, I hope everyone can comment and give me a high score, 😘) Gu Hanche has been born with a charming fox appearance since he was a child, and has a sunny and cheerful personality. His only weakness is his clingy and protective brother who controls his sister. When he was ten years old, he rescued Su Linyin, a lonely orphan girl who was isolated and bullied, and warmed up the iceberg little by little. The three-year age difference cannot match the tenderness of being together day and night. The three of them depend on each other, which is the warmest scene in the orphanage. At the age of fifteen, Su Linyin, a daughter of a prominent wealthy family, was taken back to Kyoto by her family and left quietly, leaving only a silent farewell. After eight years, they reunited on the university campus. The once cold girl was now a highly sought-after young lady from a wealthy family. But Gu Hanche gradually discovered that beneath the gentle surface was an extremely paranoid possessiveness. She secretly recorded all his daily life for eight years. She was overflowing with jealousy and possessiveness. She was jealous of her sister and others. She would trap him and imprison him at the slightest touch. Everyone in the world lamented that the aloof goddess was cold and distant, but only Gu Hanche knew that this beautiful sister had already fallen in love with him and became paranoid and addicted.