Somewhat Cinderella

"you need to find your bride and for that we are holding a ball" the king said to the crown prince AKA Jimin, his son.
"what do think this is, a fairy tale. do you think some Cinderella would just enter the hall with glass slip-" he was cut by thuds and other commotion...as a man or was it a lady? oh yeah its a lady, I guess in a shirt, pants, and muddy boots. No one would find her pretty in that attire but she surprisingly caught the prince's eyes.
"I guess a Cinderella did appear, but in muddy boots instead of glass slippers" prince Jimin murmured to himself.
But this isn't just any poor and abused Cinderella she us the very pampered obey daughter of the rival king who has come here as a spy to gift her beloved dad with precious information.