Author's note: I don't own anything but the plot or my OCs. It takes place when Celestia and Luna retire from their duties of raising/lowering the sun and the moon.

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Twilight's P.O.V

As Celestia and I walk out of my new home, Luna opens her mouth to speak. "Twilight, I must tell you something. Celestia and I have just retired from our duties. A certain royal will rule Equestria with you," Luna said.

"The one that Rarity got angry at one time at the Gala?" I asked.

"No, Prince Blueblood will not rule with you. My daughter, Princess Moonlight, will rule with you."

"How is that possible?"

"A long time ago when I was your age, I used to date a handsome young man. It was love at first sight, and then he became more cruel as we aged... One night, he stormed into my room, and..."

"Did he force unwanted sex on you?"

"Yes... And one day when he found out about my pregnancy, he broke up with me. I got real angry with him, and I told him to stop being so mean. He denied it and left me all alone..."

"And was Moonlight born as a result?"

"Yeah, but I tried to hide the fact that I have a daughter."

As she is talking about Moonlight, I can imagine what she might look like... Almost. She might look a bit like Luna, but I'm not sure.

"Moonlight will be arriving at five o'clock tonight," Celestia said, "We should meet her at the train station to tell her of the news. I must ask you something, Twilight... Are you okay with being immortal?"

"Me?! As immortal?! Wouldn't I outlive my friends?!" I asked.

"Now, Twilight, you must calm down," Luna said, "I know what it's like to outlive someone."

I calm down a bit.

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A few hours later, Moonlight arrives at the train station...

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Twilight's P.O.V

A young woman with dark purple hair and fair skin seems to be waiting for us. She approaches Luna, and hugs her. "Is this Moonlight?" I asked Luna.

"Yes. Moonlight, meet Twilight Sparkle. She used to be Celestia's student before becoming a princess. She once helped me to reunite with your aunt," Luna said.

"It is nice to meet you, Twilight," Moonlight told me.

"It's nice to meet you too," I replied.

"Moonlight, we must tell you something. Your mother and I have retired from our duties. You will rule along with Twilight," Celestia told Moonlight.

"Really? I've always wanted to be a ruler," Moonlight replied with excitement, "But with Twilight? She might tell me to stay back while she fights the bad guys, as you did with my mother."

"Now, Moonlight, that didn't actually happen. I once helped Celestia to defeat Discord with the Elements of Harmony," Luna said as she chuckles a bit, "She doesn't treat me like a damsel in distress."

"So, if you were Luna's daughter, then why haven't you showed your face often?" I asked Moonlight.

"Ever since my mother got banished to the moon, I became introverted and lonely. After that, I started living with a guardian because... Because I don't want people to think that I'm also a bad person. I... I'm not bad, should I repeat," Moonlight replied.

"You're never bad- and you don't have to be shy," Luna said, "Even though I was shy when I got released from the Nightmare forces. Since then, I never got out of my bedroom until Nightmare Night."

"What do you mean by that? What if the people fear me and hate me?"

"They will not. I'm sure they would like you."

"We will move the seat of power to Ponyville, where Twilight lives," Celestia said.

"Twilight, you're a princess? I thought you're from humble beginnings," Moonlight told me.

"I wasn't born a princess. Celestia made me a princess right after I got the destinies of my friends right," I replied, "I wasn't really sure about being a princess at first, but I've gotten used to it, but outliving my friends? I'm not so sure."

"Twilight, I know how it feels to outlive a friend," Celestia told me.

"But you are busy all of the time-" I replied.

"Not always." She chuckles a bit, even though she doesn't laugh very much.

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What do you think of the prologue? Well, the next chapter will take place after 100 years. Immortal ages will be different from human ages- like if a non immortal is 17 and a human would be 1700, for example. Any reviews/comments appreciated.