I like this story a lot, but how dense do you need to be to not have put things together yet..?
All that mask he wears covers is his eyes and brow, and the neighboring king called him "Ran" while she was present.
Not to mention she heard him talk with and without the mask on with I assume the same voice.
Good story and likable characters, but the female lead is an idiot...
Plotholes galore, at least it enjoyable though.