Princess Luna has known about her sister's dirty little secret for quite some time. And since coming back from her banishment, she has caught Celestia (by proxy), and now as payment for keeping her secret, 'Tia's "escort" must fulfill a certain task.

He must discipline the Princess of the Night, as well.

Ordering the deputy captain to her chambers, she prepares herself for a moment of observation, and hopefully, satisfaction of curiosity. But despite her best efforts to stay objective, Luna learns some pretty surprising things about herself as she endures the most intense—and the most delicious—pain she's ever felt in her life.

Another naughty princess is about to strictly punished, and love every second of it . . .

Contains erotic spanking, but no sex (the sex tag is for moments that are the closest to full sex that I have ever written).