Princess Luna presented you with a challenge: Beat her in a game of chess and you will receieve a kiss, but lose and a surprise awaits you. Having hundreds of years of experience gives her quite the advantage, and winning was never really a possbility, but you aren't one to back down from a challenge.

The inevitable loss leaves only your surprise, which is far more lewd than you thought befitting of a princess.

(No story, just clop)