Jyu Kazawa aka Spider Fox. In an alternate universe, Jyu was a ninja in school. One day, a heist broke out in downtown Tokyo. While she got word on the news, she saw a masked vigilante using acrobatics taking out the thugs and stopping their crime. Words gotten around that this vigilante is called "Spider Wolf". Impressed, Jyu use her ninja training and goes by the name "Spider Fox" tracking down this Spider Wolf.