This is based on a roleplay between @Warriorcat- and me.

(2) Chara was yelling at Cross, telling him how bad he was. If he really wanted Nightmare's affection that badly, why did he betray him- again ?! He could've stayed silent, or trick Ink. But no, he chose the choice that would make Nightmare see him as a traitor once again. Cross, however, didn't pay that much attention. He was watching at the walking Creator, soon he would be able to finally be with his senpai.

Ink looked at the door then glancing back at Cross, " Dream's in there? You better start speaking soon. ", the chains got tighter around the skeleton. " Im asking for a clear answer. "

Nightmare woke up and looked at Dream for a moment before seeing him go back to sleep. He felt around for auras, too, but what he found instead worried him greatly. Sure, there were the usual auras, but there was also one that sucked in emotions like a black hole. Nightmare got out of his bed, so he could walk closer to the door , in order to open it, and pecked out slightly.

(2)" Yes. Yes, I'm sure. But don't you dare touch Nightmare, or some informations about a certain X-event will be published. That would ruin you and your reputation, so be warned. " , Cross told him. He hadn't noticed the door cracking open, but Chara did. They didn't bother to tell him though, Chara was more loyal to Nightmare than they were to Cross, since she was aware of the goopy skeleton being stronger than them.

Nightmare quickly got back into the room after seeing Cross and Ink talking in the hallways. He went to Dream and shook him : "Dream wake up, Ink is here. "

Ink huffed, " Fine, I only came because of Dream, anyways. Get out of here. " He made the chains trapping Cross disapear, pointing at the hallway. The artist began to walk to the door and entered the room quietly.

(2) Cross wasn't stupid, and so he obbeyed and hid behind one of the many pillars, watching the scene playing on from a safe distance.

(1) " Mhh...Five more minut- Wait what ?! " , Dream immidiatly jolted up as he processed his brothers words. " Ink is here ?! " He quickly scrambeld out of the bed, noticing his brothers serious expression. It only took him a few seconds to stumble into the big closet, he was trying to hide from the Creator. Maybe he didn't know that Dream was here, it could've been a coincidence that he was here right now,...right ?

(1) Dream was hiding, and Nightmare turned towards the angry creator. " First of all, how did you get in ?! Also, you're in my room. Ever heard of private space ? I advice you to leave, or else, there are going to be...c o n s e q u e n c e s. " , he said, grabbing the other with a tentacle. How did Ink get here ? Nobody could make a portal leading here without his permission. Was there a traitor in his gang ? Well Cross obviously was one, but stepping as low as letting your worst enemy in ?! This could be bad, what if they already knew about all of their weaknesses ?! Or even worse, Cross might have told the remaining Star Sanses about Dream !

As Ink went inside, he looked st Nightmare blankly but didn't he answer any questions,  since they did't seem to be important right now. " Where's Dream? '' The creator flinched when one of Nightmares tentacle curled around his arm. " I know he's in here, just give him back and nothing bad will happen, Nightmare. "

Dream panicked when he heard Ink'words, so he didn't really pay attention to his movements, which lead to the door of the closet being cut down by sharpend tentacles. The younger twin froze at the sound of moving wood, frantically searching for an escape way. But there was no way out, so he curled into a ball, hoping that he wouldn't be recognised. A thud draw everyone's attention to the splitted closet.

Hearing the noise, Ink walked up to the closet, tearing it appart completely.  Confusion showed on his face as he observed the other goopy skeleton  " Who are you... ? " , the artist asked in a demanding voice. While this strange monster looked almost like Nightmare, there were some small, but important, differences. Instead of the usual ice blue left eye, this one had a softer yellow one, which was on the the other side of his face, it was his right one.

" Uhh...Just a random servant ? " , surely, his statement sounded more like a question, he wasn't used to lying. After all, why would the God of Positivity lie ? " I was ...uhh playing hide and seek. That's definetly what I'm doing here, nothing else ! Why else would I be here...? This is a mere coincidence ! "

''Stop lying, you're really bad at it. Are you betraying us Dream? Are you giving up everything we accomplished, just for Nightmare ?'' ,  the Creator hissed, pointing his brush at the other guardian.

" W-What are you talking about ?! W-who's ' Dream ' ? I don't know anyone with that name... " , the positive twin kept rambling on, trying to talk himself out of this mess.

How exactly did Ink figure out it was him ? He changed his clothes, right ? As his hand unconsciously wandered towards his head, he froze. The crown. His unmistakeable crown was still resting on his head, its golden colour shining through all the corruption.

" You're not good at lying, Dream. Just stop it would you ? Now tell me, how did this happen ? And why are you with him ? " Ink looked back at Nightmare, before his gaze wandered back to  the smaller guardian.

 " It's none of your buisness. I can make desicions on my own, I'm a few centauries old. If I want to chose this way, I will. There's nothing you can do about it. So leave, as my brother said, or I'll make you leave myself. " , now that his identity had been revealed, there was no use hiding it anymore. He didn't want to fight his friend, or at least his prior friend, but if he wouldn't let him be with his loved ones, the positive guardian had no other choice.

"So you're wasting all of our accomplishments ? What about our shared goal ? " , the Creator told Dream, hoping to convince the positive guardian, so he would come back. As he took a second look at his former friend, he had to admit that he wouldn't have known it was him without recognizing his crown, even with Dream's terrible lying skills. " What about our team, our goal to help all AUs ? "

 " Wasn't it clear from the start ? I wanted to be with my brother, and now I am. You wanted me to be an angel, so I became one. An Angel of Justice. An Angel of Protection for those who deserve it. And you're not one of them. " , Dream snapped back.

Ink huffed, the guardian is not an angel, not anymore. He gave up his wings to the devil, his own brother. ''Fine, call yourself what you want. I hope you're glad with this decision.'' The artist painted the floor with his brush, creating a portal. He and jumped in, leaving the room just the two twins.

" Well, that was easier than expected. Even if I'm not sure if I should be happy about him telling everyone about me, or sad. But they had to notice it eventually, anyways, so it doesn't really mater. " , Dream informed his brother.

 Nightmare stayed quiet during Dream's and Ink's conversation. ''That's true Dream, they'll probably know now, but you should know that I'm very happy about your desicion. '' , the negative twin smiled for a bit, but eventually, he stopped.

" You know, you're really cute when you smile..." , as soon as he noticed what he stated, the face of the positive guardian started to cover in a bright golden blush, and he hid behind his arms. " N-no ! I didn't mean it like that ! "

Nightmare was humming, but when he heard Dream's comment, his face started to heat up with a cyan blush, too. "Don't worry, Dream, I know what you meant. " , did he though ?
 

"You do ? What was I trying to say then ? " , the flustered brother asked, attempting to hide his embarrassment, but also being really curios about the actual answer. He would never admit it, but he found hisbrother even cuter when he was blushing.

''I thought of it as a complement, that was what you were trying to say, right Dream ?" , the King of Fear asked the question to reasure himself, since he wasn't sure himself. Was it weird that he found it cute when his brother was flustered or emberrassed ?...Has it always been like that, or was it new ?

 " Ohh...Alright " , why was Dream so sad about that ? It's not as if he meant it another way, right ? Everything was so confusing right now, he couldn't even say. Sometimes he questioned if he was going insane, but who knows that ? This weird feeling was probably just his soul adapting to the new circumstances.