The System A sercret organization funded and hidden by the government. Also by everyone on the outside. They kidnap and train teens to be assassins. L

Kim Yoora: Her nature is very kind and happy. She doesn't take anything for granted and appreciates the little things in life. Although she can be very gentle, she also can be rough. When provoked, she is serious and straightforward. She isn't afraid of hurting people with the truth and isn't afraid of being hurt by the truth. Strong, witty, and beautiful.