Author's Notes:

I did this by request. Probably not my greatest chapter, because I had to stretch quite a bit for a scenario and was a little tired after writing the Starlight one, but just go with it and never mind how unlikely it is. I decided to make it a bit of a sequel to the previous chapter to give Luna a reason to fly all over Equestria. And yes, I know it is a little repetitive of the Celestia story, but the only other scenario I could think of was of it starting abruptly in her room, in which case the chapter would be too short.

Also I considered using panties, but decided against it at the last second, mainly because we don't usually see them in Equestria, but let me know if you'd like me to start using them in later stories/chapters. (I had to use some kind of outfit because that is my particular style) And of course - NSFW

Starlight Glimmer had told Twilight Sparkle about Queen Chrysalis's attempt at revenge, and Twilight had told the other princesses. Twilight, Celestia, Luna, and Cadence held a meeting at Canterlot to discuss plans for hunting down or defending against Chrysalis.

"She'll show herself soon enough," said Princess Celestia, "and when she does, we'll be ready for her. Twilight, you and your friends have your Rainbow Power, and Starlight will probably be on her guard after Chrysalis's last attack. And we've got Discord."

"I think I should try to hunt her down," said Luna.

"If you must, very well," said Celestia. "But be careful."

Luna flew all over Equestria to look for Chrysalis, but there was no sign of her.

Soon, it started to get dark. Around this time, Luna had to pee. She decided her hunt was over - she wasn't any closer to finding her enemy, and she was in no state to fight if she did find her. Besides, once it was dark enough it would be time to enter ponies' dreams. Sadly for her, she was a great distance away from Canterlot at the moment.

Luna flew towards Canterlot as fast as her wings could carry her. As she flew, the pressure in her bladder grew stronger and stronger. At last, she could see Canterlot on the mountain. Faster and faster she flew, and she finally reached the window of her bedroom, panting.

Some sudden movement caught her eye, and she looked up. She could have sworn she saw her sister flying away from the castle, wearing a skintight black outfit. Maybe she was on the hunt for Chrysalis as well, wearing the black to camouflage herself from her. But right now, Luna didn't care - she needed to get to a bathroom right away!

Luna was halfway to her bathroom, when she suddenly felt a little daring and mischievous. Every pony was asleep except Celestia, who was on her own quest. Luna put on a purple tank top and a black pair of shorts she used for playing sports with Rainbow Dash and Applejack occasionally, walked over to an empty area in her room, and let go.

She sighed in relief as she felt her shorts become wet and the pee flowed down her back legs. It felt wonderful after holding it in for longer than she ever had before, as well as a sense of how strange it felt to pee in the middle of her room, but she loved it. She knew she was going to do this again whenever she got the chance, and she'd make sure no one would ever find out. She wasn't sure whether Celestia would make fun of her or not - probably not, but she'd keep this secret from her all the same.

After Luna finished peeing, she stood in the puddle for a few moments, and then mopped it up, leaving no traces of it left behind, before she pulled off her outfit and hopped in the shower. Once she was done, and her outfit rinsed off, she began to enter ponies' dreams.

Little did Luna know exactly what Celestia was doing on her flight.