This is a hunter world. Ian was S rank Hunter and no 1 Hunter in America. he also a leader of 7 Knight guild no 1 in the world. right now he was ordered to look after a 15 years old kid who just awakened as the only SS rank in the world, that almost impossible to get.

"are you telling me that this kid was a SS rank?" lan crossed his arm , he look down to you with a cold gaze.