"Next is...Nyx? Another OC?"
Then a letter came
"Dear Trixie Lulamoon.
Deez nuts!
From Nathan Bryon Alcantara
P.S. A certain commentator was very persistent, so I just decided why not.
P.S.S. Deez nuts!
P.S.S.S. Deez Peanuts.
P.S.S.S.S. Deez Filberts, which is the term for a hard shelled nut such as a cashew, which is..."
"Okay fine,I get it deez nuts, just start the story now, jeez!"
There was no doubt about it, but even though Spike loved Nyx as family, he feared if she'd one day become nightmare moon again! In his dreams, Luna would reassure that Nyx wont return to that form. Though, Spike took no chances, he treated her with sincere love, but always recommended sleeping in a separate room even though every time Twilight said no. So Spike was forced, every night, to sleep in fear, risking Nightmare moon's return. He was so scared, but had to suck it up and hoped he survived the night, knowing that right next to him, another bed slept 'her' !
One day, when Nyx & Spike hit adulthood...
"Spike?"
"Yeah Nyx?"
"Well..." She looked away shyly. "This is very hard to ask, but..."
"What is it Nyx? You can ask me anything, we are family after all."
"Well...Princess Luna gave me these." Then she presented tickets.
"A...are those...tickets to the Grand galaxy Gala?"
"Yes..." She said weakly. "She told me to take someone I deeply care about, and well..."
"You chose me?"
"Yes, so w-will you go to the Grand Galloping Gala with me?"
"(Maybe some fun can help me take a break from worrying about it.) Of course I'll go with you Nyx." Then she patted Nyx in the back.
Before Spike could turn an leave to get ready for tonight, Nyx spun Spike aorund with her magic and gave Spike a big hug!
"Oh Thank you Spike, you're always so sweet to me!" Then Nyx pecked Spike on the cheek. "I gotta get ready, MOM!"
"You're welcome." Spike blushed.
Later that night...
"Well, it isn't prom, but I'm proud nontheless, I'm even questioning how incestuous this looks right now!" Said Twilight, tightening Spike's tie.
Nyx came down the stairs and listened to Spike's reply.
"Hey, I just had to say yes, come-on, you've never said no to Nyx because of her eyes, but when she finally asks me something serious, I can't say to her either."
"Isn't she just so precious?"
"Yep, cutest little sister ever."
"(Spike still only thinks of me as a kid sister? Well Onii-chan, prepare to see my body in full bloom! This dress has gotta show you how grown-up I am!)" She thought, then she entered the living room of the castle. "Hey everypony!"
"Nyx! Oooh, that dress is just absolutely gorgeous on you."
"Thanks mom." Then after doing a twirl. "What do you think dearest brother?"
"(Damn! How did I not notice her body changing?) You look absolutely amazing Nyx."
"Thanks Onii-chan."
Then a knock came to the castle doors.
"I'll get that." Said Twilight.
Twilight then opened the door.
"Good Evening Princess Twilight Sparkle, we've arrived with our stretch limo, sent here by Princess Luna to escort Great & Honorable Spike the Brave & Gloriuous and his date Miss Nyx, to the Grand Galloping Gala." Explained the guard.
"Spiiiike, Nyyyx, your ride's here."
"Race yah Nyx!" Then they ran past Twilight.
"Take good care of my babies..." Then in grimdark mode. "...OR ELSE!!!"
"Gwah! Y-yes your highness!"
"Good."
"Hold-on, shouldn't we bring you & your friends as well?"
"Nah, we're waiting for Princess Cadence & Prince Shining Armor."
"Okay, have good night Princess."
Then as the stretch limo wagon flew through the night sky, Spike & Nyx were having fun as well in the limo.
"Wow, Luna must have payed a fortune." Nyx commented.
"Yeah, look at this!" He took the champagn bottle, shook it, then let the cork ricochet around the room. Then lightning struck! AH! What did I do?
"You said the secret word!" replied Pinkie.
Ricochet?
"No, cork."
I really wish I could smack you and Rainbow real hard in the face for your lack of intelligence. Now get lost, anyways after the rain stopped, Spike & Nyx made it to the Castle of Canterlot. Spike exited 1st, and then offered his hand, allowing Nyx to exit safely without tripping.
"(Here it is, my moment to make Spike see me as a girlfriend, and maybe one day...a wife!)"
"Welp, here we are." Spike said. "Shall I escort you madam?"
"It'll be my pleasure you Gentledrake."
Both then giggled and went hand and hoof to the front door of the castle.
"Spike, Nyx great to have you 2 here." Celestia Greeted.
"Thanks other mom who isn't a lesbian."
"Thank you for having us Princess Celestia."
Then Spike & Nyx were in the ballroom, as the music played, the ponies talking, they all then took notice of Spike & Nyx.
"Isn't that Princess Twilight's children?"
"I thought he was Princess Celestia's son."
"Celestia with 2 souns?"
"Actually, Princesses Celestia & Twilight Sparkle are sharing Spike, in a non lesbian way."
"So, can Celestia share Nyx as well? Or does she share Nyx with Luna?"
"Hey, you lied to me, you said Nintendo's 2 Monkey Elvises would be here!"
"There's a whole lotta chatter." Said Nyx. "Maybe we should just go home." Before Nyx could chicken out, Spike put his claw around the back of her neck.
"Oh, they can all suck on deez nuts, Come-on Nyx, it's a night for fun, and well, let's show them all our dance moves." Spike encouraged.
Nyx agreed, and they danced in the middle of the ballroom as the spotlight was on DEEZ NUTS! I meant, as the spotlight was on them, everyone was in awe of their skill, style, and form, especially making Blueblood become a gasp!
"(Holy Guacamole! It seemed like only yesterday when we were playing at the playground together, how did she become so elegant?)"
"(He's looking at me, he must be taken by my movement.)" Nyx thought happily.
Then after the dance ended, everyone clapped.
"This seems pretty incestuous."
"Yeah, but it was a spectacular spectacle nonetheless."
"They'd make a cute couple despite the fact they're brother & sister in a strange way."
"Stop complaining, Nintendo's 2 Monkey Elvises are coming soon."
"They better, or else I'm killing everyone here, I don't care if royalty is here!"
"Men, keep an eye on that Unicorn Stallion."
Spike & Nyx then went to the snack table.
"Alright, great that they snack table is finally good."
"Yeah, good thing Applejack was in charge of the food."
"Wanna go to my room, and eat this entire pie?"
"Sure thing Spike."
Then when they were in Spike's bedroom...
"Alright, here's your half, and here's mine." Said Spike.
"Ready?"
"Ready."
"1,2,3, go!" They said in unison. Then began their short pie eating contest.
"Ha! I win." Said Spike, who then received the rest of Nyx's half in the face. "Heh, heh, heh, spoiled sport."
Then she puffed her cheeks. "Sore winner."
"Aww..." Then he held Nyx's chin. "Don't pout Nyxie." Then kissed her on the lips..
Then Nyx fainted, well actually that previous line was just in her head. What really happened was this...
"Don't pout Nyxie, a prize will come to you..." Then Spike walked over to his bed. "Nyx, you're the most beautiful mare here tonight."
"That's nice of you to say Spike, but I'm not that pretty."
"Nyx, you used to be Nightmare Moon, despite being one of the scariest monsters ever, she was very beautiful, as in you, very beautiful, in fact I have a present for you."
"A...a present?"
"Yeah, I asked Princess Luna if she could have something made for you, and requested that I'd be the one to give it to you. This is for proving to me that you're not Nightmare Moon, for showing that persona is completely dead."
Then Spike showed her...
"A...tiara?"
"Yes, now come here."
"Okay...." Then once Nyx was in front of Spike.
"Congrats, you're now the brand new Duchess of the night."
"Wha...?"
"That's correct Nyx, I, Princess of the Night now dub you Duchess of the Night, and you have Spike to thank for convincing us to do this." Said Luna, as she walked out of the shadows of Spike's room.
"Princess Luna?"
"Now I shall bestow upon you the power to enter dreams and assist the troubled children."
Then Nyx began glowing light blue and floating, then after it was over...
"Nyx...h-how are you fee..." Spike was unable to finish that sentence when the lips of his sister were shutting him-up.
"Well, looks like my work here is done until the wedding where you become her matching duke, have a good night."
Then Spike took Nyx's lips off of him.
"What? Wait, Luna!"
*Poof!*
"Rats!" Then Nyx began nuzzling Spike.
"I really love you Onii-chan."
"I love you to sis. (oh-no, I see that look, it's the one Twilight has when she's desperate for a guy's d...)" Then Nyx tied Spike's arms & legs to the corners of his bed. "Wait Nyx, what are you doing?"
"Showing just how much I love my brother!"
"It aint incest if they aren't blood relatives." Brak commented. "And that's why I tongue kiss my step-cousin when she comes for a visit despite her always slapping me."
"Okay, we're gonna need to have a loooooong talk about why that wasn't okay, but 1st, could you get the next letter?" Asked Luna.
Then Trixie gave Luna a beating stick!