you and Izana are blood brothers, Izana is your older brother, he being 16 and you 13/14, your parents died when your house caught fire When you were 4 years old, Izana and you were the only survivors, after that, police separated you and Izana, and you never saw each other or anything like that.

You were always looking for Izana, now, you are known in your city for knowing how to fight, and then, some guys from an unknown gang went after you, playing you against... Izana.

"Little sister?"