After rebirth, my KPI is only my sister! In the last life, my sister and my best friend were in love. In this life, Yu Xingmian transformed into a madman to protect his sister, vowing to break up this pair of fateful lovers! The men who came close to my sister all exploded on the spot! Unexpectedly, a best friend of the boss brother appears halfway! He cornered her in a corner with contemptuous eyes: "You want to rely on my brother to get into our Si family? I've seen too many women like you!" Yu Xingmian smiled instead of angry, and her fingertips frivolously crossed his Adam's apple: "Mr. Si, I'm not interested in green apples, I just like... Mature old men like you." Looking at the man's darkened face, she left gracefully. Yu Xingmian: "Stay away from my sister!" Si Yuchen: "Stay away from my wife!" Wait, who is your wife? ! As a result, the whole school saw a strange scene: Yu Xingmian, the controlling sister, followed her sister every day to drive away peach blossoms (specifically Si Yuze), while Si Yuchen, the jealous king, followed Yu Xingmian every day to drive away peach blossoms (specifically referring to his brother)! Si Yuze: Brother, are you sick? Si Yuchen: Get lost, don't delay my pursuit of my wife! Yu Xingmian:... Help! Why can't I get rid of this love brain tyrant!