Four Sisters, Born in Japan , Goes to New York City for the first time and meets the Turtle Brothers. Edit: So basically Four Sisters were born in Japan but some assassins go in the village that they were born in and killed their parents. So they run away into the woods so they wouldn't be killed. They lived there for a couple of years and then they decided to go to the city of lights because it was there dream to go live there. That's when they got in a street fight, the brother saw so they helped them and........ yeah hope you enjoy