Шарлотт Е. Фіробішер

A young girl from the Empire who is the illegitimate daughter of the Emperor. As proof, she has "E" as her middle name, which is an indication of the royal family. Initially portrayed as a spoiled and selfish girls, she is, in fact, very down to Earth, capable of all the household tasks. She struggles internally to fulfill her mother's dying wish: to be recognized as a legitimate child of the Emperor. However, when the Empire refuses recognize her and brands her as an impostor, she is forced into the tough decision of having to face the death penalty or defect to an opposing nation.

After she and her bodyguards were forcefully convinced by Cecily, she renounces her royal status and defects to the opposing nation along with her bodyguards took from wikipedia