Nightmare's tentacle stiffened and was about to impale Dust. Before Nightmare was hugged from behind. The tentacle stopped dramatically, slowly going back to its regular form.

"I-I'll do it..." Error mumbled from behind him. Dust looked up at the two battered and bruised. Even having a hole through his shoulder, it wasn't enough to keep him down.

"Guess we know who the victor is." Nightmare snickered. But his murderous tone still lingered in those words.

"A-are you actually serious, Error--" Dust was cut off before his eyes pupils turned into white dots. Error had started to emit his pheromones on purpose. Horror picked him up. Pulling him out of the room. Dust looked at his friend surprised after regaining himself. "You told me to stop him-- Damn it... I really am useless." He murmured putting a hand on his head.

Horror sighed "It's okay. You did your best. I'm not sure if anyone of us can even compete against Nightmare. I'm sure Dream can but..." He looked back at Error's door from the hallway "I don't know we what to do against him. Let's just put you away from here. I know you can control yourself but not for long."

Error looked down while infront of Nightmare, still trying to cover his bottom from the arousing smell it kept emitting. His legs crossed. Nightmare grinned and took his hands away from his covering. Kissing one of them lovingly.

"Shall we continue~?" He said ever so deep and lustful. Error looked at his leg to see blood. He pointed at it ''Y-your leg... its bleeding...''

''It doesnt matter.''

"B-But..." Error panted before being pushed onto his bed. The sudden fall was replaced by immense pleasure. His masochistic personality now taking its toll

Nightmare went on top of him. Touching him in secluded places, kissing him around his head. Error moaned loudly and repeatedly from all of this. Looking at his dominator with hearts in his eyes.

This made Nightmare lose control of himself completely when he saw this. 

"N-Nightmare-- UWAH!" Error was held up by Nightmare's tentacles. Each on one part of his limbs. In doing so, his tentacles were slowly moving his pants down. Error blushed wildly while letting the other do as he pleases.

Error's pants were now off. Showing a bright green color of ecto. Nightmare stared at him. Error looked away embarrased ''C-Can you do something...?'' He said.

An untouched slit laid there in between Error's legs. It was dripping with precum. 

Nightmare chuckled ''You were like this the whole day...? How lovely~ Almost makes me wish i'd have done this to you sooner.'' Nightmare laid Error on top of him, the position now in a zodiac style

Nightmare unzipped his pants, showing an ecto penis of his own. Error's hearts widened after seeing this.

"G-giant... HUAH!" He gasped when suddenly the other started to grind against him. Error moaned loudly while the rod went up and down. 

After a brief moment, Nightmare shoved it inside of him. Error screamed and started to scratch his back from how tight he was holding the other. Nightmare grunted in doing so.

"s-s-so b-big..." Error moaned before he was starting to move up and down. Nightmare grinned and decided to let him do the foreplay. Error looked at him with discolored hearts in eyes. 

Suddenly Nightmare took over, grasping both sides of Error's waist he pulled him down. His full length now inside of him. Error gasped before he was starting to be moved up and down.

Nightmare went even faster, this caught the other by surprise because he kept the pace steady. But now he was fast. Getting even more faster.

Error's moan and pants also fastened. Nightmare shoved a tentacle in his mouth, He bit onto it while muffled noises came out "So loud... Try to be with something in your mouth" Nightmare laughed panting. 

The muffled moans became more desperate and louder. Nightmare sped up. A knot now starting to form for the both of them.

"Shit. I'm gonna fill you in a f-few." Nightmare stuttered a bit, Error nodded hugging him with actual tears coming down his cheeks. 

The tentacle that muffled Error was removed, Nightmare suddenly stopped then put Error's collarbone infront of his face.

"aaaAH~!" Nightmare bit onto him aggressively before thrusting one more time. Both of them came at the same time.

"G-God..." Nightmare squeezed out the remains of his cum into him before his eye went back to regular blue. He was back to normal now.

Error had his eyes closed. Nightmare widened his eyes before pulling out of him. Laying him down on his bed.

Only tired breathing could be heard from the other. His ecto body was now disappearing and Nightmare hugged him "W-what the fuck did I do...?" He mumbled looking at his bleeding shoulder. A clean bite mark was seen.

Error opened an eye tiredly looking at the skeleton who was hugging him "I... I'm sorry, Error. I rather be with you in a different way-- I can't control myself--" Nightmare started to stutter. Error hugged him which cut him off.

"It's okay... I wanted to do it with you... It's just... So sudden. But now you own me." Error chuckled softly smiling at him "You b-better take care of me, Nighty." 

Nightmare smiled with a tear coming down his cheek before he hugged him tightly. The both of them giggling.

. . . 

"Really Error..." Dust mumbled looking down. The both of them sat outside them sat outside the mansion, Horror patted his back "Well, it was his choice. We can't really change that."

Dust sniffed once more before standing up and rubbed his gauzed shoulder "They did secross just now. It's over." He sighed looking at the doorway.

"Huh? What are you two doing here-- The fuck? Why are you injured Dust?" Cross walked up to the two. Horror ran up to him "It's Error, he's in his heat! Him and Nightmare did secross!" He yelled shaking him.

Cross looked away blushing "Oh really...? Is it a first for you-- Wait-- IN HEAT?!" His face changed drastically.

"Heyyyy guyssss!" Killer arrived at the scene shortly after before sneezing "Phoo! Smells like mating went around here... To be short, my heat should be coming soon too. I should be careful." Horror ran up to him and hit him in the chest.

Killer stumbled back a bit surprised "This is all your fault Killer!" Horror yelled at him "You didn't get Error his pills-- Now he and Nightmare did It!" 

Killer put both his hands up with a nervous smile before he turned around "Must buy it now I guess." 

"ISNT IT TOO LATE FOR THAT?!" Cross screamed at the leaving figure.

. . .

"Suppression pills please." Killer placed his card down on the table infront of him "Alrighty, please wait here." Said the owner as he turned around and went to the back of the store.

Killer sighed before glancing at a shelf. It was Birth control items.

His thoughts lingered for a moment "Here you go! Anything else?" The owner said. Killer nodded.

 "Yeah... I'll take that."