I Became the Scheming First Love of a Dark-Hearted Male Lead

[Transmigrate into a book + a heroine who’s seductive without realizing it + a scheming hero who plays dumb to catch his prey + both leads are sexually exclusive] *Note: This story is swoony, sweet, and satisfying. It aims to leave readers unable to sit still. Shen Yin transmigrated into a book as the male lead’s scheming first girlfriend, a cannon-fodder supporting character! After seducing the male lead, she kept a string of admirers at school, stringing along countless men. In the end, the male lead fell in love with the sweet and naive heroine, while the villainess squandered her winning hand and married an older nouveau riche for his money. Shen Yin: ...At least the original villainess hasn’t seduced the male lead yet. Then she accidentally kissed him, and the progress bar above his head moved: [1%] After she finished stroking his face, the progress bar read: [10%] Huh?? Male lead: “So you like me after all. You hid it well. Hmph, now that you’ve hooked me, don’t even think about running away.” After school started, Shen Yin was busy dealing with the original villainess’s many admirers one by one when she suddenly felt a sinister gaze fixed on her. Under a tree not far away, the male lead stared at her with a tense expression, as if he wanted to devour her. Frightened, Shen Yin quickly explained, “Listen, it’s all a misunderstanding...” Her young boyfriend was vigorous and spent every day kissing and nibbling at her. Everything about him was great, except he wouldn’t let her call him young. Once, Shen Yin let it slip and called him, “Little boy...” “Who are you calling little?” “...I’m sorry.” She had always thought the progress bar tracked the plot’s development. She was just waiting for the heroine to appear and the male lead to fall for her instead, so Shen Yin could bow out gracefully. So why was the male lead still clinging to her? With red-rimmed eyes, Qin Xu held her tight and refused to let go. “Just try abandoning me after leading me on!”