The protagonist is Touka, a young woman with long black hair who excels in kendo. One evening, while returning home from practice, Touka was unexpectedly shoved into a car and transported to a remote mountainous region. Initially taken aback by the sudden turn of events, she eventually decides to seek vengeance against those responsible. A month later, armed with her determination, Touka tracks down her assailants only to be met with another round of violence. Despite being injured once again, Touka remains resolute in her quest for retribution, knowing that her pursuers will be waiting for her return.