3rd person pov

Error landed with a thud back into the anti-void, blood and marrow seeping out from his ribs. His HP started to glitch, and he had healed just a little. "UGh... I wIsh aLl tHe pAin wOulD jUsT gO aWAy...! I wIsh InK aNd tHe oTheRs wOuld jUsT bELiEvE mE!"
"MURDERER!"
"GO DIE!"
"Everyone wants you dead and gone~"
"gReaT... tHe vOicEs..." Error gave a glitchy sigh. He lied there, letting the negative thoughts consume him. Then, he had an idea. He was bored, and tired of the dark thoughts, so he decided he would visit Nightmare's gang. He opened a portal and stepped through.

Nightmare's pov

I suddenly sensed a bunch of negative energy. Must be Error. I walked outside the mansion, ignoring Dust stabbing the walls with bone attacks. Idiot. I see Error walking towards the mansion. Wonder why he's here.
"hEy nIghTmARe."
"Hi."
"mInd IF I sTaY fOr a bIt? I'M sO boREd."
"Sure."
I lead Error inside. Ugh. The mansion is a mess thanks to the idiots. Shit. Cross is tearing at the couch. Dust probably hid his chocolate in the couch again."Cross, stop ripping the couch! You'll turn it into rubbish!" What surprises me is that Error sticks his hands in the rips in the couch and finds the chocolate with ease and gives it to Cross, then uses his strings to mend the couch. I wish he would just join us. Dust groans at Error for giving the chocolate back to cross.

Dusts pov

Error is cool and all, but I hate it when he finds Cross's chocolate and gives it back. How does he do that?! I can hear Papyrus groaning. He's disappointed too.

Timeskip to when Error leaves
3rd person pov

Error feels a pain in his SOUL; he felt the balance shift sideways and Error got a little dizzy. Ink created another AU. Error tells the others it's time for him to leave, and he waves and steps through a portal to the new AU. 'sTupId iNk... hOw tHe hElL dOes hE mAnAnGE tO kEeP cReAtIng wIthOuT gEtTinG aRtiSt'S bLoCk?' Error thought to himself. Error entered the AU and dusted the monsters then fought Sans in the judgement hall. After killing everyone he destroyed the entire thing; code included. Ink didn't show up, surprisingly. Maybe he got sick of coming to stop Error from destroying?

Error's pov

'InK NevEr shOweD uP WHen I dEstrOyeD tHis AU... sOmEthIng'S wRonG...'
I made a portal back to the Anti-void and continued to crotchet a new sweater for myself. From all the beatings I get, this sweater I'm currently wearing is full of rips, blood, dust and marrow. Still... the fact that Ink didn't give me a good beating bugs me...

Ink's pov

I could feel Error destroy the new AU I LITERALLY JUST MADE. 'THATS IT, I AM SICK OF THIS!' I create a portal to Dream's place and storm right in. "DREAM!" He better be here. I need to call a meeting for all the Sanses. Now. I see him rush downstairs and confront me. "Ink! What's up? Is everything okay?!" I sigh. "We need to make a meeting with all the Sanses. Now." He looks a little surprised. "O-okay...?" He agrees. Good. I nod my head at him and step through the portal to Underswap. I need to get Blueberry.