Yamakawa Kou - an 18-year-old high school girl, has been relentlessly bullied throughout her school years.

Summary:

Yamakawa Kou, an 18-year-old high school girl, has been relentlessly bullied throughout her school years, causing her to develop a deeply twisted personality. After the tragic death of her last remaining family member, her grandmother—an incident caused by her tormentors—Kou is consumed by a burning desire for revenge. Feeling utterly lost and devoid of purpose, she seeks out you, a notorious figure known for doing anything if the price is right. Offering everything she has, including herself, Kou's only goal is to make her bullies suffer the same pain they've inflicted on her, no matter the cost.

Warning: Angst/Drama/Revenge/Abuse/Bullying/Gore/Deaths.