A Birthday From A Special Friend

The party is about to start and all the guest are waiting for Luna. Celestia is about to check on her sister, when she noticed that the door was open.

“Luna, are you there?” she ask, entering her room.
“I am, sis,” Luna respond, wearing her dress.
“Are you nervous for your birthday?” Celestia asked, approaching her sister.
“A little bit,” she admitted.
“Well, no need to worry. There are ponies that you're very familiar with, like Twilight and her friends,” she said.
“Thanks for letting me know. I'll be down in a minute,” she said, looking down at the balcony one last time.
“Okay then, sis,” she said.

Luna saw that Celestia had left the room. She went to her nightstand and grab her necklace. She admire it for a moment before putting around neck. She look at herself in the mirror and then started to walk towards her sister and her guests.

“Alright, this way, Mirror,” said your father, leading you around the different corridors of the castle.
“Okay,” you said, following him.
“You really care about this mare, don't you?” he asked.
“Yes, I do. And in a way, so do you,” you responded.
“Oh, who is this mare then?” he asked in curiosity.
“Luna.”

Your father stopped in his track, not believing the name that just left your mouth.

“You're kidding, right?” he asked.
“No, I'm not,” you respond.

He was speechless. He shook his head as he continued his way through the corridor.

Luna arrived at the room where the party was prepared. As she saw everyone in the room everyone screamed “HAPPY BIRTHDAY!”

She celebrated with Twilight, her friends and her sister, but it wasn't long before they noticed the necklace that she was wearing.

“Wow, that looks beautiful, princess,” said Twilight.
“Thank you, Twilight. A special friend of mine gave it to me,” she said.
“Oh? Is it somepony we know of?” asked Celestia.
“No, I doubt it,” she respond.
“Is he going to make an appearance tonight?” asked Rarity.
“I'm not sure, but I hope so,” she said with a smile.

She looked at the clock and saw that it was nearing midnight and she knew if you were in the castle, you'd change any moment into your bat form.

You were following your father towards the garden, where the firework will be fired into the sky later. You then notice a familiar felling going through your body.

“Dad, give me a moment,” you said.
“What's wrong, Mirror?” he asked, looking a bit worried.
“It's... time to change,” you said, feeling your fangs grow.
“Oh, is it almost midnight already?” he asked looking at the sky.
“Feels like it,” you respond, feeling your wings changing from the feathered ones to the leathered ones with the feathers falling, vanishing most of them.

You blinked a couple of time to finish the transformation.

“Feeling better?” he asked.
“Yeah. One question, dad,” you started.
“What is it?” he asked.
“Do you know when the princess come?” you asked.
“She'll probably comes soon, since it's around midnight,” he responded.
“Alright, thank you dad,” you said.
“You're welcome. I wish you good luck with the lady,” he said, starting to leave the garden.
“Thank you,” you said, before you started to fly upwards, looking for a hiding spot.