Third person pov:
(This takes place after Error lost his anger.)

It was a normal day for Error. Laying around in the anti-void, listening to the voices shouting at him.
"WORTHLESS!"
"GLITCH!"
"Nobody cares about you. You're all alone~!"
Then, he felt his SOUL throb. Ink had created another AU. "uGh... dAmN iNk..." He got up, his broken body creaking and groaning in protest not to get up, but he ignored it and the pain flaring through his body. He created a portal to this new AU and stepped through.

AFTER DESTROYING THE AU

"ERROR!" Ink appeared in front of him, seething. "I'VE TOLD YOU OVER AND OVER AGAIN TO STOP DESTROYING!" Error just shrugged. "Iv'E tOld yOu alReAdY iNk, I cAn'T stOp DeStRoyInG uNlEsS yOu sTop CReaTing." Ink scoffed.
"Bullsh*t! You're just making excuses so you can keep on destroying!"
"wElL..." Error sighed. "I dOn'T knOw whAt tO tElL yOu iNk, I'vE tOld yOu alReAdy ThaT bEcAuSe oF thE bAlAnCE aNd iTs cApAciTy, I hAvE tO dEstRoY aU'S bEcaUse YOu kEeP fiLlIng tHe sPacE uP. ThAt'S aLl I cAn saY. NoW iT's Up tO YOu tO belIevE mE. FoR tHe sAke Of tHe mUltIvErSE." Error shot Ink a pleading look, but Ink just whipped out broomie, his signature, oversized paintbrush.

Error's pov

I tried to tell Ink. Again. For a moment I thought I finally got through to him but no, he just whipped out his paintbrush and is now charging at me. I'm so sick of fighting. WHŸ ÇÄŃ'T ÂŁŁ MŸ ŚŪFFĘRĮÑG JÙŚT ËŃD?? He attempts to slash me with his paintbrush, steaming red paint dripping off the paintbrush and flying this way and that from the motion. I smoothly shift my torso over to the side, dodging his attack. He swings it at my face and I duck, but then he tries to catch me off guard by sweep kicking me. I jump and wrap my strings around my wrists and use the strings to fling myself backwards into a portal back to the anti-void.

Ink's pov

He's trying to escape again. I'm so damn sick of this all...! "NOT THIS TIME, ERROR!" I teleport behind Error before he reaches the portal and swing broomie at Error with all my might. I can feel the determination flowing through my bones, stirring the marrow and blood in my body. BANG! Error goes flying through the air, a glitched scream escaping his mouth. While he's vulnerable and in the air, I teleport underneath him and hit Error in the spine with broomie. He lets out another glitched cry as he comes crashing to the ground.

3rd person pov

Error's bones cracked and broke as he came in contact with the ground. He tried to get up, but Ink stepped on his rib cage, and a horrifying crunch sounded out as his body became more broken. Ink kept his foot there, adding a little more pressure to keep Error down. "uNgH..."
"Shut up! You merciless destroyer! You don't deserve to exist!" Ink crunched his foot further into Error's ribcage. Error started to clench his teeth from the agony. "ś-ŠtØp...!" "THEN STOP DESTROYING." Ink spoke with venom laced in his tone. Error shoved Inks foot off with all the strength he could muster and created a portal behind himself and fell in. He could hear Ink scream in frustration.