Dead silence.

No sound could be heard of the living.

Desperation.

Was what drove him to kill.

Power.

Was what he gained after each kill.

Pain.

What he felt as he killed each monster, especially his brother.

Genocide.

He fought the genocide child once and for all.

Illusion.

The last remnant of his brother's image.

The underground where the monsters were sealed was empty. All of the monsters were killed by one of their own, who wanted to save them from being killed over and over again by the child. The genocide child was merciless as they killed the monsters, and then they would reset just to kill them all again. He remembered every reset the genocide child did, but no one else could remember so well, not even his brother who would also be killed by them.

When he killed all the other monsters, his brother was the last one remaining. He couldn't bare for him to suffer and have to watch him be killed again, so he took his life with his own hands, and at the last moment his brother let him because he believed in him. Then he faced off against the genocide child, and won.

He thought that by defeating them, then they would no longer kill anyone. That they would reset and not kill anyone anymore...

But they never came back.

Nor did anyone else.

It was as if he killed the child forever, as if they could no longer reset because of how he killed them.

Although he stopped the genocide child, he couldn't escape from his own sorrow and despair, and that was when he began seeing his brother's image as a head, scarf, and gloved hands speak to him. Whether his brother was real or not, or if only he could see him, he felt better not to be alone. But his grin could not be erased from his face, with one pupil of red and a ring of yellow, and the other of white and a ring of blue that seem to glow from under his hood, the dust of the monsters still stains his hoodie.

Dust Sans.

He would still travel around the underground, using what he found to make improvements upon his house since he still lived there. At one time, someone came to his world to ask him for his assistance, and he agreed to leave temporarily to do their work and return home. He was asked not too long ago to search for someone, but he didn't care to look for them, so he just hung around his world.

One particular day, Dust Sans was walking through Waterfall, hearing the voices of former monsters from the Echo flowers as he felt more sympathetic to the ones he killed that day. He traveled a little while to the darkest passages and stood shrouded in the darkness so that he could no longer hear the voices.

'Why do you torment yourself, Sans? You did what you had to to save us from them. Don't feel so regretful, or would you have preferred they killed me again?' His brother's image spoke, and Dust replied,

'No I dont! I don't regret doing what needed to be done... but just today I do, a little. I guess I miss the others is all... But at least you're still with me, Pap.'

'Oh, I see. Okay! I was just checking to make sure you were alright, Brother!' His brother's image said cheerily as he faded from his sight.

"Thanks bro," Dust said, as he signed.

At the Ruins:

A figure descended from the opening to the underground from Mount Ebott on a bed of yellow flowers. She came there to investigate the place and see if anyone still lived there. As she investigated, she noticed that no one was in the Ruins, which would be expected if not for the dust that was scattered around. She hurried along and made it to a door that she passed through, but it was when she entered Snowdin Forest when she realized that she couldn't go back. The door of the Ruins locked itself, which made her think that whoever killed the ones inside either came from where she did or knew who was in there to get inside. As she traveled, she discovered footprints in the snow that were small enough to be a child, which made her assume that whoever killed the monsters in the Ruins came from where she did. It made her feel a little uneasy, but she had faced a being of evil and madness not too long ago, so she wasn't deterred to continue traveling, with caution.

She wore a scarf of purple around her neck, With purple eyes that had four white stripes in each iris. Her hair was black with blue tips in a ponytail, while her long sleeved shirt was white with orange stripes on each arm and around the waist. She wore a purple strap around her waist, and black pants with black shoes.

While above ground, a corrupted being invaded the human world and attacked the people with fire and claws. She was horrid in her beast form, and had slain many who ran or fought her. The girl who just entered the underground had fought this creature with the power her best friend had helped her unlock, although she passed away since she gave all of her own strength to her since she was fatally wounded from the corrupted beast anyway. She fought the beast with power from her friend and other living friends that overwhelmed and completely destroyed the corrupted creature, saving the humans from the horrible beast.

Although she saved everyone and felt sorrow from her best friend's death, she felt empowered and determined to find the cause of the creature's rage and stop it, since the beast mentioned that a child underground had helped it gain power to attack the humans from all the kills they had accumulated. So, she decided to check the underground to see if she could save whoever remained, and defeat the corrupted child once and for all.

The humans above ground had given her a nickname for her endeavors and for saving them, and she accepted to be referred to as Angel or Angel Curtain.

Angel continued traveling through the underground as she passed by a house that didn't look abandoned, but it seemed like no one was home. She continued, and entered Waterfall, amazed by it's beauty, but alert by it's silence.

'How far did this kid travel? I wish I could have saved even one monster... Oh, what am I saying?! Maybe there is at least one who survived! And I'll find them... even though I'm kind of trapped here too, but I'll get out. I can break the barrier myself now anyway...' Angel thought, and she continued her journey through the underground, kicking a small rock by mistake which echoed through the large passages.

In that moment, Dust heard the echo as he immediately froze in his tracks as he was heading back home. He listened a little longer and thought,

'Is... someone else here? But there shouldn't be... unless the kid... no. They won't get far if it's them!'

Dust disappeared into the shadows of the dark room to await the intruder, and that's when Angel entered the room. He could see her somewhat by her white clothes, so he figured that she wasn't the kid, but he didn't know who she was either. As he tried to observe her in the dark cavern, she sensed a dark presence there and held onto her dagger handle just in case. When he came close enough, Angel lit the dagger with lavender energy as she swiped towards him, sending an energy blade at him. Dust was able to dodge the attack, and with the light of the energy attack, they were able to see each other clearer.

"Y-You're a monster from this place, right? But why do you seem so dark and dismal?" Angel asked.

"Hmph, yeah I live here. But you're a human, aren't you? Why do you seem so light and content?" Dust asked, sending a barrage of bones her way.

"I'm half human, but why would you think a human is not like that?" Angel asked as she dodged the bones.

"... the kid was," Dust replied, as he dodged another attack by her.

"The kid... is it the child Corruption spoke of? The one who would kill over and over again?" Angel asked, surprising Dust.

"Yeah. That's the one," Dust replied, as they stopped attacking for a moment.

"Where are they?" Angel asked, more stern.

"... I killed them," Dust replied in a serious tone.

"... You actually killed them... well, I guess that's one less thing I'd have to do, but... were they really that bad?" Angel asked in a more somber tone, that made Dust upset.

He ran towards her with a bone weapon in hand and said, "What do you think?! They killed everyone over and over again because the first time wasn't enough for them!"

Angel used her dagger to block his bone strike, and she said, "I'm not saying they can't be bad! I just wanted to know if they were forced to or not!"

"...They did it on their own," Dust said, calming down as he pulled back from her.

"Then it's done. Corruption won't come back then," Angel said, lowering her weapon.

"Who is Corruption?" Dust asked.

"A beast who attacked the humans. She was merciless," Angel replied.

"Reminds me of the kid, but I guess the humans got a taste of their own medicine," Dust said, as Angel became angry and attacked him with her dagger.

"The humans didn't send the freaking demon kid to kill you guys! Nor are all humans like that, unlike a monster like you!" Angel said, as Dust grew irritated.

"You mad?! Why? Did you lose someone important to you?" Dust asked, as he could see for a moment, a flash of pain surge through her eyes.

Dust was surprised to see the same pain of loss in her eyes as he felt for his brother.

"Who didn't lose someone when that witch attacked? But you have no right to speak so lofty! I see the dust on your clothes! You've killed other monsters haven't you?!" Angel said, as she round kicked at him while he caught her foot.

"I had to! That kid would have killed them again and again if I didn't! And I'm not being lofty! I was telling you my opinion!" Dust said, as he pushed her leg away and swung his fist at her, as she caught it.

"Well you're opinion is wrong! Corruption wanted the kid to kill so that she could get stronger and kill the humans! This wasn't about humans and monsters fighting! It was their genocidal tendencies that urged them to attempt to destroy us all!" Angel said, as she tried to cut him with her dagger, but he blocked with his bone.

"Then they were just trying to get as much L.O.V.E as possible to kill us all?!" Dust asked, pushing her back.

"That's what they were doing! They needed the highest Level Of ViolencE as they could get..." Angel replied, as they both started calming down.

"... So that they could share it and kill everyone," Dust continued her sentence, as they stopped fighting and lowered their weapons.

"Yeah. I came to stop them after stopping Corruption. But it looks like you did that," Angel said.

"... I guess so," Dust said.

"... But you killed the other monsters to stop them?" Angel said.

"I needed to fight fire with fire. That's all I could do. Nothing else worked," Dust said.

"... I wish I could have done something, so that you wouldn't have done that," Angel said.

"If you could stop Corruption, maybe you could have stopped them too. But you weren't here..." Dust said, as he felt something burning in the back of his head, overwhelming him as he said,

"You didn't come back! Why didn't you come back?!"

Angel was surprised by his words, and said, "Wha- but I couldn't come down. Corruption was killing people! She killed my best friend! I didn't even know..."

Then Angel felt burning in the back of her head as she said, "I couldn't come back! Corruption didn't let me!"

"I needed you!" Dust yelled, as he walked towards her while her back hit against the wall.

"I wanted to be with you! But she attacked us!" Angel yelled back, as they stood only a few inches apart.

They gazed into each other's eyes, as their expressions softened, and then they kissed as if it was natural to them, while wrapping their arms around each other. It was a kiss of longing and affection, until the burning in the back of their heads stopped. Angel opened her eyes as she started pushing him away, while Dust's eyes shot open and he let her go.

"What the heck was that?! Why were you kissing me?!" Angel yelled as her face went red.

"Me? You're the one kissing me! You have lips!" Dust yelled back, as his face went indigo.

"Don't try that on me, buddy! You had your arms around me and look! LOOK! I'm the one with my back against the wall!" Angel said, as she smacked the wall.

"Your arms were around me too! And I didn't put you there on purpose! We were just fighting," Dust said.

"Hmph!" Angel said, with her arms crossed as she looked away from him.

After a moment, Dust walked closer to her as she looked at him questionably, and he smirked and said,

"Heh. You're a real fighter though huh? With the sweetest kiss I've ever had, besides it being the only kiss I've ever had."

Angel looked at him in surprise, as he laid his arm above her head on the wall, while she pressed her back against it.

"Can I ask for an official kiss this time, Angelface?" Dust asked, gently rubbing his thumb on her chin.

WACK!

Angel's hand made heavy contact with his face, as her glare was intense, and she spoke in such a way as to discourage him from trying to ask again,

"I'd never want to kiss a murdering punk like you. I don't know what happened before, but don't think it will ever happen again."

Angel moved away from Dust and started walking away, as he stood silent, looking towards her with an intense glare. As Angel kept walking, she felt something take hold of her arm and pull her back, as she stood face to face with Dust. His serious expression made her feel uneasy, but she wasn't afraid.

"Don't get it twisted, lofty princess. I'm not trash to be thrown aside. Something wasn't normal about that kiss and you know it! Something happened to us right before that, and I want to know what that was because I can't remember for some reason. Can you?" Dust asked, and Angel didn't say a word as she slowly shook her head.

"Alright then, Angelface. Let's... try not to quarrel too much, since you seem very intent on that," Dust said with a small smirk, and Angel rolled her eyes and nodded as she pulled her arm away.

"Okay. Fine. We'll be at a truce," Angel said.

"Fine," Dust said, and both of them put their weapons away.

"Come on. I'll show you where you can stay for a while. You must be bone-tired from all of those skeleton of attacks," Dust said, having trouble holding back a smile, as Angel narrowed an eyebrow.

"Stop," Angel said, and Dust just snickered.

She decided to follow him as they returned to Snowdin, since she wanted to learn more about what happened to him and the underground. He led her to the library and said that she could use the bedroom upstairs if she wanted to.

"Hmm..." Angel said as she observed the library with the misspelled sign.

"What? Too crummy for an angelic goddess such as yourself?" Dust asked with a smirk, and Angel narrowed her eyes at him.

"It's fine. Thank you," Angel said, as she headed inside.

"Hey!" Dust called to her, as she turned towards him.

"My name's Sans. Sans the Skeleton. But everyone calls me Dust, for obvious reasons," Dust said.

"... My name is Curtain, but everyone calls me... Angel," Angel said, and his eyes widened.

"Wait, really? So that angel face is no lie, huh?" Dust asked, and Angel scoffed and entered the library, not realizing that he noticed her blush.

"Heh. She's a hard head, but she's cute," Dust thought out loud.

'Are you certain she can be trusted brother? She is an intruder after all,' His brother spoke to him.

'Yeah, but she's not so bad, and if she is, I can handle her,' Dust replied in his mind to him.

'It looks like she fought someone as strong as the human child. She seems like a worthy opponent,' His brother said.

'Looks like it. But if she is as angelic as her name, then I have no reason to really fight with her. She's not like the kid,' Dust said to him.

'Nor is she like you. You still carry your sins on your back. She fought without having to do what you did,' His brother said.

'It's not like I had a choice! There was nothing more I could do. I tried every freaking thing,' Dust said back to him.

'But you still carry your guilt too. You didn't want to do it, you had to... but there is still something about her... something about that kiss... like if you two know each other already,' His brother said.

'I know. It was weird. I felt like I knew her for that moment, but the next moment I completely forgot. Like if my memory just disappeared or went to sleep. It was the same with her too,' Dust said to him.

'Then investigate. I'm sure you'll remember more if you talk to her and even spend time with her,' His brother said, more gleefully.

'What, like a date? I mean, she's cute and fiery, but she'd never date a guy like me. She made that clear, considering she called me a 'murdering punk...' I'm not a punk... I'm Sans,' Dust said with a smirk.

'... Even in these circumstances, you still have to say a joke, don't you?' His brother said, as Dust laughed about it while heading home.

In the library:

'It's quaint. Appropriate. Needs a little dusting, but it'll be okay for now. I need to break the barrier to get out of here, but I'll need to rest up before I do that,' Angel thought, as she started cleaning the room.

'... Ugh! What happened to me?! Why did I kiss him?! He still carries the dust of other monsters on his jacket, and I kissed him! What's wrong with me... why did it feel like I knew him from somewhere... like I knew him when I kissed him... but why can't I remember now? Err! This is so confusing!' Angel thought, as she continued fixing the room with more aggression.

Phew! Finally got this all fixed up. Considering Christmas and family visits, time wasn't favorable to me until now.

See ya next chapter. :)