The main character is Touka. She has a long black hair and is good at kendo. One day, a nightmare happens to her. On her way home, she is suddenly pushed into a car, taken to a mountain and.... Touka is extremely shocked.... She decides to take revenge on them. One month later, she finds them and try to beat them up. But she is assaulted by them again.... They say to Touka, "You wanna take revenge on us? Go ahead...." Touka gets mad and starts looking for them again though she knows they wait for her return....