Okay. In the past, I've stated I'll never write what can effectively count as Rape. However, I did choose to do this, and I actually enjoyed going over and above what I normally do. I do want to place a trigger warning. If you find subject material such as rape sensitive and triggering, please do not read this chapter. If you did read this, you are accepting that these things will be mentioned, and you aren't allowed to say stuff like "OMG! Rape! How dare you support Rape! With no Trigger Warning at That!" because one. I don't support Rape. I think those who Rape others deserve sentences. But think of the context of this story. It's between two fictional characters, one of whom is a yandere. CONTEXT ALWAYS MATTERS. Two. I do have a trigger warning. You're hopefully reading it right now. If you aren't reading it, then I don't know what to say beyond this:
If you choose to continue reading, having not read the trigger warning...I hope you find the deepest pit and burn in it. And stay away from any and all of my works forever. If you choose to ignore the trigger warning and then try to claim I didn't post a trigger warning, you are the worst kind of person and you deserve nothing but the worst in your life.
For those of you who have read this warning, YOU HAVE BEEN WARNED! PROCEED AT YOUR OWN RISK!

~Nightmare's POV (Before he kidnapped Error)~

I watch Dream and Ganz fight, frowning as Dream slowly goes goopy before he very quickly overwhelms Ganz in this 'fight'. Ganz is pretty quickly dusted thanks to goopy Dream. Dream then controls the goop back into a pendant, humming softly. I slowly land behind him, my tentacles lightning fast and precise, stabbing through his soul and skull.

"That's for fucking up Error before I got to him." I walk around Dream, seeing him look towards me.

"B-brother...?"

"Maybe I am. But you're dust either way." I twirl my knife.

'And I think you know why."

"W-why...?"

"You touched Error!" I lunge forward, shattering his soul with my knife, dusting myself off. I hum, heading to Underswap, and finding Killer rather easily. He's in a clearing, looking around for MY Error. I walk slowly up to him, smiling at how easy this was. He jolts, turning around to look at me.

"Who are you?" I shrug.

"Doesn't matter. You're as good as dead." He turns, my tentacles stabbing into his eye sockets and pinning him to the ground. I walk over, grabbing his 'soul' and holding my knife.

"Time to kill you and claim Error for myself!" I stab the knife into Killer's soul, stepping back to ensure no dust gets on me.

I sigh softly, smiling at the fact my trap worked, Error now stuck in my room at my home.

"Pity I have to pretend to be a goopy evil boi so as to not raise suspicions..." I sigh, allowing the goop to retake my body, reforming into Nightmare. I release my final sigh, heading through a portal to my dining room, grabbing the many bottles of stuff. Things to weaken magic, things to create an intense feeling of lust, things to make him weaken physically, and some regular water to mix this stuff into.

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~Error's POV~

Even though the door is RIGHT there, I can't touch it. The last time I tried to open it, my hand was burned. I growl, walking around the grand room. The bed is large enough for a king, and the room is draped in purple, black, dark blue, with some golden highlights. I sit on the bed, feeling the silken sheets under my fingers.

Nightmare probably wants what...Shattered...and Mel wanted from me.

I frown, standing up and kneeling beside the bed, looking under it.

Enough space to hide, but I can't get out of here. My magic is being blocked by this room...

I sigh, ditching the idea to hide.

I should probably just let him take whatever he wants...maybe he'll let me go...

"Hmmm~ Hmmm~ Hmmm~" I blink, not recognizing the voice humming.

Maybe someone's here to rescue me...though that isn't much better than being stuck here with Nightmare.

The voice ceases it's hums as it stops in front of the door, before goop slithers under the door and sliding in, before reforming into a skeleton I don't recognize.

"Error!" I slowly stand, cautious and wary of this new skeleton.

Nightmare will probably kill this skeleton.

This skeleton smiles, tilting his head.

"Nightmare will kill me? I doubt that very much, Error."

"0n3. H0w d0 y0u kn0w my nam3? Tw0. H0w did y0u r3ad my mind? Thr33. Why d0 y0u d0ubt that Nightmar3 will kill y0u?"

"One, Error, I know your name, and the how will be revealed shortly." This strange skeleton, like Dream in looks, finishes mixing a bottle of some liquids, the color being a dark purple.

"Two, Error, I'm like my brother in terms of connection. I could sense your dark feelings and link them back to a thought." This skeleton walks over to me, holding the bottle with curious intent, his purple eyelights reminding me of someone.

"Three, Error, why do I doubt that Nightmare will kill me? Simple." Right before my eyes, goop rises around the strange skeleton, covering him head to toe, his one cyan eyelight focusing on me.

"Because I am Nightmare." I jump back, flipping behind the bed, hiding and peeking to look at him. He focuses on the bottle in his hands.

"Error, you have a few options here. You could completely obey me, and I wouldn't need to use this precautionary measure. You could drink the bottle if you aren't willing to comply. Or I could force you to drink it. Or I could have my way and simply allow you to suffer in agony." I shiver.

"Y-y0u kn0w s-shatt3r3d a-alr3ady did s-s0m3thing lik3 that t0 m3..."

"Yes, a fucking shame my stupid brother got to you first. And then finding out Ganz and Mel tried to claim you. It made me livid. I was ready to tear the multiverse apart to find you..." I blink.

"Why didn't y0u?"

"A woman spoke to me, telling me where you were fated to be. That I didn't need to worry, for she would allow me to play with you to my hearts content." I shiver.

A woman? Fated? This doesn't sound good....

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~Nightmare's POV~

I watch my prey remain still and silent, likely deep in thought. He doesn't even notice the tentacle slithering it's way to his ankle. I smirk internally.

He will probably easily succumb, but I kinda want to try this on him. See what of it affects him.

The tentacle slowly tightens around his ankle, being careful not to alert him while also getting a good hold on him. Finally, it's perfect, and I yank the tentacle back to me, hanging him by his ankle. He yelps, trying to summon something, but the wards I placed in here negatively impair his magic as is.

"You know, Error. I heard the legends of the great Destroyer. Kinda a pity I'm not meeting you at full strength, but I can see why you were such a problem, causing so much negativity." He stops struggling for a moment, looking at me with suspicion and hesitation.

"Why ar3 y0u c0mplim3nting m3?"

"Isn't flattery the sincerest form of affection?"

"Uh...I d0n't r3ally kn0w."

Damn, the voice wasn't lying when she said she stunted his growth in order to make him play the game.

"Oh well. Will you drink this or will I have to force it down your throat?" He sighs.

"I'll...I'll drink it...happy?" I wave, and my tentacle sets him right side up on the ground.

"Yeap. Drink it all, Error." I hand the bottle to him, and he drinks it all, however, he definitely doesn't trust what I've made. However, the concoction immediately takes effect, his eyelights forcefully shifting to hearts, gaining a pink tint to them. He crumples to the floor, panting softly, and sweating heavily.

This worked better than expected, and he'll be too weak to do anything but ecto-magic. I suppose the anti-magic gunk was a little overkill given the wards on this room. But I know I'll lose control of my magic, and I wanted to ensure he couldn't kill me in my sleep/weakened state before I could get him in my thrall.

"W-what th3 h3ll....was in that?"

"I'm impressed you're able to control your lust. And also not be moaning from the pleasurable pain you're likely experiencing right now. But then again, you're the Great Error. The Destroyer the multiverse fears." I laugh, feeling my sarcastic nature bubbling to the surface. He turns one of his heart-shaped eyelights my direction.

"Wh3r3 ar3 y0u g0ing with this?"

"Just funny to me. The Powerful Destroyer, taken down by some Lust Magic. Is that why you hated UnderLust in particular?" I kneel down, gripping his chin, forcing his gaze to meet mine.

"N3v3r hat3d anything...just had a j0b t0 d0 is all." I chuckle, allowing my tentacles to grab him and hold him in front of me. He looks so pained, but unwilling to give me anything.

"You know. I could help you with this sticky situation you got yourself into." He lets out a soft whimper, not of his own accord. I can tell cause right after the whimper, he shakes his head, biting harder to keep quiet. I allow several extra tentacles to grab a box of things from a hidden panel in the floor, placing the weakened destroyer on my bed, cuffing his hands up to the different corners of the bed, debating if I should cuff his feet before deciding against it. I want to be able to fuck him raw. I hum softly.

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~Error's POV~

After Nightmare cuffed me to the head panel, he seemed in thought, before he decided against something, and instead pulled out a cloth. I shake my head, fear pulsing through my soul as I remember what Shattered did.

"What's the matter? Afraid of being blindfolded?"

"S-s0m3thing l-lik3 that..." Nightmare chuckles, placing the blindfold over my eyes.

"Don't worry, it's not like it'll hurt you." I whimper, the darkness reminding me of memories I don't want to think about. I jolt slightly when something touches me.

"Just removing your clothing, no need to be jumpy." I nod, shivering when Nightmare gently runs his hands along my already summoned female ecto-body.

When did I summon my ecto-body?

"Wh3n...?"

"Shortly after you drank the concoction." I shiver as the King of Negativity continues being gentle with me. His tentacles all are gentle, lightly touching me. He hums softly, further away from me it seems.

"I have a few things I want to do, and get. Just stay still, okay?" I whimper softly as he suddenly breaths against my neck, nibbling and licking and sucking on my neck and collarbone. Eventually he finds a spot kinda up on my neck that causes a moan to leave my mouth without my permission. He chuckles softly against that spot, before biting that spot really hard. I whimper, wincing in pain, feeling blood spill down my neck and shoulder onto the blanket below.

"Good thing I was planning on redecorating." He releases my neck, clipping something around my neck over the spot he bit, clicking something else to this neck thing. He does something, and I feel a tugging sensation from the neck thing.

"Mmm...do you have ecto-ears and tail you can summon?"

'I-i gu3ss?"

"Summon them." Nightmare's voice is gentle, but there is a firmness in his tone that dares me to say no to the King.

"0-0kay." I focus, already a hard task, and pant softly when I feel my ears and tail summon. He hums in happiness, rubbing my ears softly.

"Good kitty~" I shiver at the nickname, unable to stop the wetness from forming in my down below regions. Nightmare doesn't seem to notice, or if he does, he's preoccupied with something else. For I then feel him grab my tail. A rush of electric sparks run down my tail, jolting through my body. I something get tied around my tail, unsure of what it is. Night hums in thought, before grabbing the tip of my tail, and moving around a little. I jolt when I feel my tail rubbing my womanhood, gentle in the motions. Nightmare's just playing with me until he gets bored. Once he gets bored, it'll hurt.

"N-night..."

"Yeah?"

"A-ar3 y0u g-g0ing t0 g-g3t b0r3d?"

"Not sure. Depends on your reactions~" I whimper, feeling fear overtake my soul again. He releases my tail, sitting between my legs, lifting my hips up by a lot.

"If you're worried, don't be. All I'm doing is preparing you for me." I tilt my head, not feeling his preparations. I soon discover why, as his preparations begin growing in size. I can feel at least two distinct tentacles in my back entrance, and one, maybe two, in my womanhood. They start slowly thrusting, stretching me completely. I moan, unable to control my feelings anymore. A soft chuckle sounds over me, likely Nightmare gazing at my face.

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~Nightmare's POV~

I smile down at him, the yellow blush more than visible on his black bones. I study the placement I have left him in. Two tentacles support his body, keeping him where I hovered him. Two tentacles, two of my smaller ones, are currently working his womanhood wider, preparing him for all I have planned. Two of my larger tentacles are working his back entrance. I am holding a tentacle I have sized up for Error's mouth, slowly rubbing chocolate on it. He doesn't realize it, but his mouth is completely open, soft moans and pants leaving it every few seconds. I pull his soul out a little, saving my plans for it for later.

Once he looks sufficiently ready, I remove the tentacles in his womanhood, which had sized up nearly double by the time they were removed. The two in his back entrance remain inside him, waiting for me to begin. I pull one of my largest tentacles beside me, judging the size. Based on what I've grown my tentacles to, his womanhood should be able to handle my manhood and one of my largest tentacles. I position myself at his womanhood, the tentacle ready beside me. I lean forward, taking him into a kiss before slowly allowing the tentacle to enter him first. He moans in the kiss, but otherwise seems fine. The fear in his soul is only a faint remnant.

I slowly enter his womanhood too, feeling a faint whimper get stuck in his throat as he releases a very loud and long moan compared to normal.

Damn, I'm glad I used some Lust Magic too. Or else who knows what he'd be doing right now.

I pull away from the kiss, smiling at his face. His mouth is opened, his tongues appearing. He has saliva dripping from his tongues, and even if I can't see his eyes, I can tell they're probably half-lidded. More soft pants and slightly louder moans fall from his mouth like a prayer.

Heh, such an interesting analogy.

I study the chocolate covered tentacle, before slowly pushing it in his mouth. He seems to come to life, instantly suckling the tentacle, moans pulsing on my tentacle. I shiver, and slowly continue my plans. The two tentacles in his back entrance begin slowly thrusting, coming to life as if they were vibrators. He moans, shivering, trying to pull away from the sensation. I grip his hips with my hands, thankful to the tentacles holding him and me up. I use my grip on him to keep him from moving away from me and the tentacles enticing him with a torturous pleasure, keeping him on the edge of ecstasy without giving him release.

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~Error's POV~

My entire body feels like it's on fire, the pain and pleasure mingling, combining, detaching, and slamming together. Some fuzzy part of my brain notes Nightmare himself hasn't moved inside my womanhood, but the rest of my brain is shrouded in pleasure and suckling on the tentacle inside my mouth, that fits so perfectly within my mouth. I can't focus enough to think about why he did that, wanting so badly to be free of this pleasurable prison, but he's keeping me stuck against him.

"You know. I was curious how long I could keep someone on the edge of climaxing before they became desperate and willing to do whatever it took to get release."

I shiver, moaning against his tentacle,

"You may have a high pain tolerance, dear destroyer, but your pleasure tolerance seems hyper-sensitive. I suspect you're too clouded to do much more than lay there while I get pleasure. I'm not surprised really. Like Reaper, you're touch starved and your body has adjusted to being hyper-sensitive. The difference is, I enjoy finding your breaking point Error." I moan loudly, grinning when I feel him jolt forward, my tail gently tickling his back entrance. He grins, chuckling.

"Alright, fair enough, Error. Hope you're ready though." He slowly pulls out, before thrusting back in really fast, the massive tentacle following suit, the two in my back entrance also thoroughly ravaging me. I moan, sucking on the tentacle in my mouth, feeling my body release multiple times in a row. Nightmare pants, slowing down for a moment, before grabbing my soul. I blink as he removes my blindfold.

"I think you need to see this~" His cyan eyelight is heart-shaped, and he pulls his soul out. I gasp as he slowly presses our souls together, laying close to me, nibbling on my sweet spot while he and his tentacles ravage all of my holes.

He trembles, whimpering while I moan out loudly, our climaxes arriving at the same time. I climax on his manhood and the tentacle, and his four (two in back, one in front, one in mouth) tentacles and manhood all squirt out cum. I whimper as he stops thrusting, the pain in my nether regions starting up. He pants softly.

"I think I'll just lay here..." The goop slowly melts off of Nightmare, tracing itself to the four tentacles. Night removes his manhood from my womanhood, the tentacles acting as plugs. I swallow the cum in my mouth as best as possible, coughing as that tentacle melts into nonexistence in my mouth. He lays against my chest, significantly smaller than me as I lower to lay on the bed completely. The tentacle plugs in my nether regions are just big enough that when I move it hurts. I whimper, but try to fall asleep, the snoring sounds from Night forcing me into sleep.

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~Night and Nightmare's POV~

We did it. Our mark on his neck. Our sperm inside him. Our child growing deep within him. He doesn't even know but he'll be a mother to our child.

He will never be someone else's lover. We have taken that chance away from everyone.

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~Error's Dream~

I'm standing on a small patch of grass in a place of total darkness, looking at someone I never thought I'd see again.

"Geno..."

"Hello." He sighs softly.

"Geno...I'm sorry."

"Fate did this. It's okay. I'll come for you."

"No! Nightmare will hurt you!"

"I'll come when Nightmare isn't there. I'm gonna get you back to the safety of this SAVE Screen, and I can make it to where only we can allow anyone in or out."

"...Thank you..."

"Of course,...Error." He smiles.

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~Error's POV (Awake)~

I feel like I had a dream...

I can't remember what happened...

But I feel excited for whatever is happening next.