Evil Neighbor’s Retribution

The upstairs neighbors renovated outside of the regulated hours, making the female protagonist's family suffer miserably. When she kindly persuaded them, they slandered her instead. The whole building thought her family was causing the disturbance, leading them to face groundless verbal abuse and beatings. Their loyal dog, which tried to protect its owners, was met with resentment. Vowing revenge, the female protagonist turned around and sold her apartment to a violent psychiatric patient. With this "King of Hell" moving in, the neighbor family suffered immensely and regretted it deeply, kneeling down to beg her to come back only to be flatly rejected, ultimately reaping the consequences of their own actions.