The Guide Group has ten ranks, each corresponding to one of the Ten Heavenly Stems. Its members have no names, only numbers, with each rank further distinguished by number.
Gui is at the very bottom. Since she has no other teammates, she doesn't even have a number. From the day she joined the Guide Group, she vowed to climb all the way to the Jia Division and become Jia One!!
But the head of the Guide Group... is Park Jung-gil, for crying out loud!!!