Joy, Hana, Min and Eshi are childhood friends and they are almost like sisters.. they did everything together.. sleep, eat, play.. everything was happy and perfect when they were together.. nothing could ever come in between their friendship.. they were strong together.. all 5 of them.. until one day.. when Joy's mother was killed by a group of assasins whom belonged to a vicious clan.. Joy came home with his father just to find her mother's body lying on the li