After Becoming the Abused Female Lead, I Bound the Villain System

Song Qingqing transmigrated into the abused female lead of a tragic novel and bound the Villain System. To reverse her fate, she transformed into the city's enthusiastic villain, helping her sisters resolve their predicaments. Scum fiancé? One slap! Beetle brother? Two slaps! Father who loves fighting? Dragon Subduing Eighteen Palms! Song Qingqing declared, No thanks needed; I'm just doing what a villain should do!