The days were passing since Dark Nyx was residing at the library. Twilight, Lunar, Nyx, and Tex were showing a lot of hospitality towards her. Twilight however received word that her parents are coming to Ponyville to spend time with her, Lunar, and Nyx.
Now it was Sunday and the group were relaxing at the library. Nyx was telling Dark Nyx her story of why she was created and what happened. Dark Nyx never realized her "sister" was meant to be a resurrected version of a pony who tried to bring eternal night. Twilight chuckled at how much Nyx remembered, even the part where Twilight was blessed and attacked Nyx. Just then there was a knock at the door. Twilight went to open the door and she was shocked that it was her parents. "I thought you were coming next week?" Twilight said curiously
"Honey, it is next week."
"I'm kidding."
Just then Nyx walked to the door and saw Twilight’s parents. "Hi grandma, Hi grandpa." Nyx greeted
Both Velvet and Night Light said hi to Nyx and they walked in. As they walked, in they spotted another filly. They let out a gasp as Nyx walked up to the filly. "Wh-what the..." Velvet said in shock.
"Mom, Dad, that's.... Twilight gulped as she was going to regret saying it. "Nyx's sister."
"Huh?"
Dark Nyx perched up. "Twilight is right, I am Nyx's sister. However I am made by a different cult, who I betrayed and joined Nyx to take them down."
Velvet and Night Light felt like it was like they were looking in a mirror. However, Twilight then explained that Dark Nyx is temporarily living with them until a decision is made when the mess with the cult leader has been dealt with. Velvet and Night Light remembered that Shining mentioned something about an upcoming war that he, Twilight, Lunar, and Nyx are going to be fighting in. Time went on, and Twilight and Lunar talked with Twilight's parents. Twilight was hoping that they don't do anything that would embarrass her.
Training
The next day was a no school day. Nyx and Dark Nyx were seen hanging with Glowing Aurora. Today was the day Glowing was going to teach Nyx how to handle the power of slowing time down on enemies. They were in a field with her and her father. As they got prepared, Glowing Aurora looked at Nyx. "Now, you want to learn about the technique?"
"Yes. It's the only thing that can help in this “War” that’s coming up."
"Well, you need to know that, this move, makes the enemy, for example, those ponies that attacked you at school, move slow, since the time flow moves normal for us, but a longer period of time for them."
"Okay. can you show me?"
Glowing nodded and asked her father to help. Glowings father, Bright Aura, ran to Glowing, however, Glowing’s horn lit up and Bright started to move very slowly as the magic hit him. Nyx’s eyes widened at this, and Dark Nyx was surprised. "Do...do they know that time is slowed down for them?" Dark Nyx asked
"No Dark, they move like they are moving in the normal time flow, but it takes a while."
Glowing Aurora’s horn went out, and her father was moving normal and stopped. Glowing looked at Nyx and she gave her a smile. She decided to charge at her, however Nyx's horn lit up and Glowing started moving slow. Dark Nyx looked at Nyx. "Well done Nyx, my twin." Dark Nyx congratulated. Nyx smiled at this and casted the spell. Glowing congratulated Nyx and they decided to go back.
Lunars secret form
The next day, Nyx and Dark Nyx were called out of School due to the mention of the war. They were in the Crystal Empire. They were going to meet the army. As they were in the castle they walked to the room where everyone was in. As they walked in they were greeted by Cadence. They then took a seat and the meeting began. "Thank you all for coming." Shining said. "As you may know, war has been called upon us. Worse yet, they want my niece."
"What, that filly? That is Nightmare Moon."
Dark Nyx then shot a glare at the outburst. "Don't call my twin that. She hates being called that."
Shining armor looked at the filly. "Who are you?"
"I am Dark Nyx. Created by Onaga, meant to take Nyx to Onaga. I'm now on your side after learning that I am a pawn for amusement. When Nyx uses the emeralds, I get their power also."
The room gasped at this. The name Onaga frighten them. Onaga was a veteran to the dragon species for the wars he battled in. Apparently he went rogue and evil when he didn't get what he wanted. "Arrest her." one called
"Please don't. I have information about him."
This meeting then took a whole turn at what she said. Twilight and Lunar looked at each other in surprise. Shining looked at Dark Nyx like she was hiding something. "Continue." he said nicely
"Onaga is calling war on us, However he wants Nyx. Apparently he's after the vault of Zelarfar. He knows since that Nyx has the Equestrian Emeralds, She is forced to unlock it, if taken there. His main goal is to destroy Equestria and rebuild it in its ashes."
Everyone was surprised at the name of the vault. They couldn't believe it. One has to be insane to unlock the vault. As the meeting went on, they discussed the strategy. At that moment, a guard came in saying an intruder is in the city. The group went outside and saw something that shocked em, Dark Shadow. This shocked Twilight, he's supposed to be dead. "Well Lunar, we meet again." he greeted.
"You're supposed to be dead."
"Heh heh heh. I'm back, but you are going to die. You're gonna be with your dear lover."
"Try me."
"Oh yeah. Well guess what, she was part of us."
This made Lunar furious. "SHE WASN’T! FIRE STORM WAS NEVER PART OF YOU"
"Oh yeah, well she told you to run, because she wanted you to die."
At this moment, an aurora formed around Lunar, his eyes turned red, redder than anything. He then looked at the Dark Shadow figure. "TAKE THAT BACK!" he barked with an echo
At this moment, all the ponies around him saw him. The aura around him was different, they saw sharp teeth formed, and the red eyes. This shocked everypony. It was like something was up with Lunar. "N-no, can it be?" Cadence said in shock
At this moment, Lunar charged at Dark and punched him sending him flying. At this point, Ponies with cloaks were around him. At this point the battle went on, and as it was going on, Lunar was in some kind of creature form. A creature that wasn't seen in a long time: a demon fox like dragon. As the battle went on, some of the ponies were retreating. As Dark Shadow had enough, he transformed, revealing he wasn't him, he was a dragon. "Fool, we will return." he said and vanished.
At this moment, Lunar calmed down and returned to normal. He was now gasping for air. At that moment, he looked at everypony with a stare. They had looks on their faces. "What?" Lunar said
"It seems you found out about your ability my dear son."
At this moment Celestia and Luna appeared. Everyone bowed and rose. Lunar looked at her mom suspiciously. She said something about an ability. "What?"
"Lunar, when you were little, we sealed a demon in you. We thought that you would use its power for good."
"Y-you hid this from me?"
"Yes honey. I'm so sorry we did. I still love you."
"M-mom... I-I-I forgive you."
Celestia and Luna then followed everyone to the meeting room to continue the meeting. As they were in, Celestia was shocked to learn from them that Onaga's main goal is indeed releasing Zelarfar and burning Equestria down then rebuilding it in the ashes. Luna was explaining to Lunar that the demon like creature was sealed in him for a reason, and was for him to use its power for good.
The meeting went on and Celestia decided to have Nyx and Dark Nyx be part of the war. Not that they are fillies, but they can take down Zelarfar if released and Onaga. However Celestia was thinking who can help out with the war. She then hit the idea of a certain someone to help out in the war.
Discord joins the fight
After the meeting concluded. The mane 6, Lunar, Nyx, Tex, and Dark Nyx headed to Canterlot, in the meeting room. In the meeting room, They were waiting. Discord was going to be coming. Out of nowhere, a spark of light appeared and Discord appeared. "Celestia, why have you summoned me, it's my relaxing day." Discord said in disappointment while acting sarcastic
"Save the sarcasm Discord."
"What now... You blaming me for another thing that happened?"
"No. We need your assistance."
This surprised Discord. Celestia, the pony that defeated him along time ago, wants help. This made Discord laugh. "Want my help. You? Hahahahahahaha. You realize you are speaking to the spirit of chaos? I make Chaos."
Suddenly Fluttershy flew to Discord and corrected him. "Let her finish!"
Discord remained silent and allowed Celestia to speak. "We have been called to war with a former friend, Onaga. He wants to release Zelarfar."
"ZELARFAR! That thing that almost destroyed Equestria?"
"Yes."
Discord was thinking. He thought it was a trick, however it wasn't when the name Zelarfar was mentioned. Discord knew this was serious. As he began to think, he saw the look in Nyx's eyes, fear. Celestia then said that Nyx is targeted to unlock the vault since she has the keys. Discord then was shocked. He needed to be part of the war. "Okay. I will be part of the war."
"We will need you to be part of Nyx and Dark Nyx's team. They will need help to get to the vault and stop Onaga."
"Okay."
"Now, I need all of you to take one of these."
Celestia then levitated a box in front of them. In them were devices. They were communicators. Twilight looked at Celestia with confusion. "Do they need signals from a Satellite? I know in the other world, They needed it."
"No Twilight, these are connected to all communicators on its channel."
Each of them took one, while Twilight took some for her, Tex, Lunar, Nyx, and Dark Nyx. As their meeting concluded, the group headed back to Ponyville to prepare for war.
The preparation
At Ponyville, Twilight, Lunar, Nyx, Dark Nyx, Tex, and the mane 6 were all preparing for the war. Applejack had an argument with Granny Smith, but ended up winning at the end with the help of Big Mac. Rarity contacted Coco through the mail asking if she can take temporary charge of the boutique with payment when return, which Coco accepted. Fluttershy had Spike help the critters, while Twilight had to hire a temporary librarian. The Cakes however let Pinkie Pie go with her friends after mentioning the war, which they hope she returns from, since she and her friends saved Equestria four times.
As they were preparing, Nyx, Dark Nyx, and friends were in her bedroom, including the CMC, Twist, Ditzy, and Silver. “Are you sure you going to be okay fighting? War isn’t a pretty thing?” Applebloom said
“It’s for Equestria. Besides, Dark Nyx is going to be fighting with me, and so is Glowing.”
“But what if that thing kills you and it’s released?”
“Hello, my cutie mark is a shield. Remember? I defended Ponyville from monsters from the Everfree Forest when I was ruling Equestria.”
“That’s different.”
Dark Nyx then looked at her twin’s friends. “I’m by her side. Besides, We’ll work as a team.” Dark Nyx said.
“But what if this Onaga dragon gets you.”
“He won’t. I will never back down on my team. I never give up, not until the bitter end.”
As it hit 4pm, the fillies headed back home. Nyx and Dark Nyx had dinner. After they ate, they all then relaxed. Nyx had to admit, this is the first time she has to deal with a war, but she is hoping this doesn’t end bad. Nyx needed a lot of home, to win the war.