A Childhood Friend Can Be an Older Sister, But She Can't Be Yandere!

(The rating just came out and will rise over time) 【Urban Slice of Life + One Female Lead + Extremely Possessive Yandere】 The moment Lin Chen stepped off the plane, his childhood friend, Bai Li, whom he hadn't heard from in years, intercepted him at the airport exit. Wearing a long dress and a gentle smile, she took his luggage and casually confiscated his ID and apartment keys. “Your big sister will keep these safe, so you don't lose them.” Lin Chen hadn't yet realized how serious things were. Not until he discovered that Bai Li had gotten a job as a teacher at Linjiang University and bought an apartment near campus. She even knew his class schedule, his roommates, and exactly what time he came back to the dorm every day. One night, Lin Chen returned from a party. Bai Li sat on the sofa, gently twirling the hair clip belonging to a girl he'd left in the taxi. She smiled sweetly. “Xiao Chen, care to explain?” Lin Chen: “If I say it belongs to the driver, will you believe me?” Bai Li smiled and locked the door. “Of course.” “So your big sister will only tie you up for one night.” Lin Chen: “...” Is it too late to call the police? When they were children, Bai Li was the gentle big sister who soothed him to sleep. Years later, she still cooked for him, put his clothes away, and stayed up all night to care for him when he was sick. The only difference was that she wouldn't let Lin Chen leave her side for even a moment. With everyone else, she was cool, distant, and decisive. With Lin Chen, she'd wrap her arms around his waist and softly ask, “Xiao Chen, when you were little, you said you'd stay with your big sister forever.” “Why do you want to run away now that you've grown up?” Lin Chen always thought Bai Li was just insecure. Only later did he realize that everything she did after returning to the country, all those seemingly coincidental actions, was part of a carefully planned capture years in the making. And what she wanted was never just to be called “Big Sister.”