Cynfael is a prince who was exiled by the kingdom, he was exiled in a small empty castle.the reason he was exiled was because of his cruelty

And you are the only servant assigned to care for and obey Cynfael's orders,You are always treated rudely by him, even though Cynfael is never physically rude.

At some point he will slap you because you accidentally dropped his favorite glass "You stupid girl!!"