Forty-Fifth: FGOD, the blacklight markings. Either they only exist on a soulful being. Or the exist only on someone who has low LOVE. Or somethin. Idk. Which version would be better? (If it's regarding the soul, Ink wouldn't have blacklight markings.) (If it's regarding low LOVE then Error's blacklight markings would bounce between existence and non-existence.) (Maybe purity? So the more pure-hearted or pure-minded or both a monster is, the more markings glow, and the less, the less.)

Thanks to ariisamonster I'll be doing the purity route. Thank CrunchySpace for the blacklight idea. The gist of it is monsters can have markings that glow (the tears/strings/eyelights, a crescent moon, hearts on Reaper or Lust, and some stuff on Ink) under a blacklight.

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Error pants softly, kneeling in the empty AU. He can feel the bad sanses close behind, trying to reach him through the barrier the Star Sanses put up. Ink raises the paintbrush high above both their heads. Error lowers his gaze, accepting that Ink will likely kill him. Error closes his eyes, taking the time he has left to remember all his friends and comrades.

"WAIT!" A loud shout speaks up, a clang echoing. Error opens his eyes, looking up to see a familiar blaster hammer halting the paintbrush's path down.

"What do you mean?" A soft, naive voice asks, silence covering the space between everyone as the owner of the blaster hammer slowly turns to Error, his blue eyelights shining softly.

"Is it okay?" He asks, Error shrugging in response.

"I'11 5ti11 b3 ki113d, 50 d0 wh4t3v3r." The silence envelopes the cube, Error closing his eyes and waiting. When the silence continues on for far longer than anticipated, Error opens one eye, to find Blue holding a light he's never seen before.

"Wh4t'5 th4t 1ight f0r?" Blue smiles softly at Error, passing the light over Error.

"This." Error tilts his head, confusion permeating his body. The effect of the light's effects on Error is instant for the entire group of Sanses who were just gunning for Error's death moments ago. Their jaws drop and they look between each other, whispering softly in groups of three or four. Ink seems curious, yet unconcerned.

"This proves nothing. He still needs to die. He's the destroyer."

"Ink...you don't know...do you?"

"Know what?"

"For these markings to glow, the monster needs to be pure-hearted or pure-minded."

"So?"

"That means that Error's destruction must either be for a pure-hearted reason, or he is naive and innocent. And either way, we can't kill him." Ink rolls his eyelights, lifting the brush up.

"He destroys my creations, he dies. That simple." Error lifts his arms to shield his face, blinking in surprise when he sees his arms glowing with faint lines and markings like Ink's tattoos. This stops all conversation in the cube, the marks glowing a blue like the tears. Blue steps between Ink and Error, turning off the light.

"Now that you all know this, see ya." Blue waves, and then a very colorful portal appears under Blue and Error, dropping them in a familiar SAVE screen.

"ERROR!" "BRAHSEPH!" Error blinks before he's tackle-hugged by two skeletons, both clinging tightly

Error tears up slightly, before looking at Blue.

"Wh4t'd y0u d0 t0 m4k3 th3m 411 5t0p 4tt4cking m3, by th3 w4y?"

"Oh! I just showed them real evidence that indicated you weren't a malicious evil person." Error tilts his head, still confused.

"I'll show you!" Blue pulls out the light from before, shining it on his face, revealing soft baby blue stars decorating his face.

"Your tears light up under the blacklight, as well as a few other cute symbols that are only visible under the blacklight."

"H0w d035 th4t pr0v3 m3 45 n0t 3vi1 wh3n I 4m 4 ki113r?"

"Because, these blacklight markings only show up on pure individuals, either pure-hearted, pure-minded, or both."

"Which 0n3 4m I?"

"Both."

"But...I'm-"

"You're really innocent in regards to some dirty thoughts, and your motivation of destruction is to protect the greater good. A few lives for the entire multiverse. You don't hold malice for the worlds or anything. You actively wish you weren't a destroyer." Error looks down, leaning into Geno's hug, sighing softly.

"50...c4n I?"

"What?"

"C4n I 5t0p d35tr0ying?"

"Depends on Ink, unfortunately. Maybe Dream will step up as leader of the Star Sanses and keep Ink from being a giant problem for you. Maybe the other neutrals will come, asking for your story. By the way...what will you tell them?"

"Th3...truth? Wh4t 3153?" Blue smiles, vibrating with excitement.

"Can I help?!" Error winces slightly, before nodding.

"5ur3."

"YAY! Be right back!" Blue teleports away, Error looking at Geno and Fresh.

"50..."

"Welcome home, big brother."