"I won't run away. I will get revenge on them!" That day, the peace of the family was suddenly shattered. By beast-like men... The father was killed in front of the daughter's eyes, and the mother lost her sense of self. 12 years later, the daughter, determined to get revenge, changes her name to "Murakuni Ryoko", learns the art of killing, and appears before the men once again. In order to send those who took her parents from her to hell...!!