The House of Undertale AUs

Chapter 12: Second Arrival- Underfell Part 1

Y/N's POV:

Compared to my boring life before, now life felt great. I ripped off my mask and challenged all of the monsters. Then, I insulted them about how they're scared about some girl that came from who-knows-where.

That insult pushed over the line and they charged at me five or six at a time. I waited until they were very close before teleporting away and blasted them with a Gaster blaster.

They didn't die, thankfully, just really injured. Ink could easily heal them if he wanted to.

Soon, all the monsters start to realize how good I could fight, which is good because I was getting really tired. They looked at me and went away. Most of them, however, staid.

"Hey, you f***ing losers! Listen up!" UF Sans growled at everyone. I winced, then made a mental note to tell them not to cuss. Especially not in front of Papyrus.

Everyone mumbled but they gave their attention to UF Sans.

"We have to leave. Those f***ing bastards that came will come back! So, listen to these two weirdos who saved you bastards from them," UF Sans snarled.

"Weirdos?" Ink repeated. He was about to say more, but I waved him down.

There was a lot of muttering and soon, most of the monsters went home to grab some stuff. Others left while some others went to get their family members.

I raised an eyebrow, a trick that a friend of mine showed me back at school before she moved away. "That went well," I commented.

Then, UF Sans turned to me. "How do you have Gaster blasters?" he growled. Well, shoot.

My answer was a shrug, and then, a bone was right at my neck.

"Tell me the truth!" Sans snarled. I rolled my eyes and teleported.

"Please," I sighed. "Save the question until after we're gone."

"But—"

"SANS!!" I heard Papyrus's voice shout out. He was very different than the original Papyrus. More crueler and he had a long scar on his left eye.

UF Sans jumped. "Y-yes, boss?" He stammered.

"WHAT HAPPENED?" Papyrus yelled. "AND WHO ARE THESE TWO?"

"No time to explain," I snapped. Already, this AU is making me mad.

"The me here is cool though," Gaster commented.

"Shut up."

"Okay okay. Just saying."

I sighed and rubbed my temple. Gaster wasn't helping things at all. But while he had a pretty good idea that involved me doing some experiments back home, it didn't involve what was happening now.

"Okay, so everyone who's going is here?" Ink asked.

"Hey guys!" I heard a familiar hiss. "Frisk is still stuck!!" I teleported next to Frisk and inspected her. Instead of a blue and purple striped shirt, she had a black and red striped shirt.

She looked at me, her eyes sparkling. "You look like my sister," she whispered. I grinned.

"I am your sister, just from another universe," I replied. Then, two long vines entangled me. I grunted in pain as the thorns embedded into my skin.

"Flowey!" Frisk squeaked. "Let her go!" Flowey hesitated, then he changed into his really scary face.

"If you hurt Frisk," he snarled. "You will pay for that. Painfully."

"I got it," I winced in pain. I felt blood gushing out from my wounds from the thorns. Flowey let me go, and I collapsed on the ground.

Ink immediately teleported to my side. "Y/N! Are you okay?"

I laughed weakly. "I'm fine. Why are you so worried?"

Ink frowned. "I promised your sister that you won't die on your trips to different AUs," he replied.

I laughed again. "That's so sweet. But don't worry about me. I'll be fine." There was one place that was bleeding steadily now. The others were pretty minor and Gaster was already healing those. I did a small grunt and used my hand to put pressure on the spot that was bleeding a lot.

"Gaster?" I asked.

"I can stop the bleeding but I cannot close the wound," he responded. "It's too deep. It will need to heal on its own." I sighed in relief and saw Ink's worried face.

"Gaster says he'll be able to stop the bleeding," I laughed. "The wound has to heal on its own. And do my sister threaten you or something? You look really pale, even for a skeleton."

Ink looked away. "Chara was nearby and he... sorta threaten me to listen to Frisk. He was scary."

I raised an eyebrow. "The great Ink, creator of all AUs and the monsters, scared of one of his creations? That's a new one."

"You two done flirting to each other?" UF Sans asked us.

"You done complaining yet?" I asked back, which earned a snarl from him. I sighed and turned to him. "Don't worry. And besides, Frisk is right next to you looking angry because you said a cuss word."

Sans whirled around in surprise to see Frisk carrying Flowey. She didn't look please.

"Look, sweetheart," he began. "It's really nothing personal—"

"You call her what?!" I shrieked suddenly. Even though she's not my real sister, she's technically my sister from another universe. So, I feel responsible for all of the Frisks.

Sans immediately started to sweat a little. "Uhh, I called her 'sweetheart'."

Flowey saw the trouble Sans was in and decided to add some more. "He also calls her 'pet' too," he snarled wickedly. Sans sweated some more.

"So? You shouldn't care about it at all," Sans shrugged. He shrank down as I met his eyes and held contact.

"Oh I care a lot," I growled, a vibration sounded in my throat. "For all you should care about—and even though I come from another universe—She. Is. My. Sister."

Sans gulped down nervously. Then, Papyrus came into the scene. "SANS!!" he yelled.

Sans looked more nervous now. "Yes, b-boss?" he stammered.

"CAN YOU EXPLAIN WHY WE NEED SUCH A BIG GATHERING?!" Papyrus suddenly yelled. A more vicious looking Undyne locked eyes with me. I fight down her stare with my own.

"Y-you see, boss," Sans continue to stammer. "These two... are from another universe. And they say that we're... in trouble?" He looked at us to clarify. Ink nodded at him.

"Besides, you should've seen the visions that I showed you," Ink added quickly. Papyrus didn't look very pleased.

"THAT DOESN'T MEAN THAT IT'S TRUE!!" Papyrus declared. I sighed in defeat.

"Sans, you don't mind if we leave your brother behind?" I asked. Sans looked horrified and pleased at the same time. He looked at Papyrus, uncertain of his choice.

"I-I umm... I'm not sure," Sans stuttered. I grinned to see Papyrus's angry face.

"WHAT DO YOU MEAN, LEAVE ME HERE?" he bellowed. "YOU CAN'T JUST LEAVE SANS LIKE THAT. HE'S AN ABSOLUTE SLACKER! OF COURSE I WILL BE COMING WITH YOU, EVEN IF I DON'T TRUST YOU."

"Suit yourself," I shrugged. "Ink, get the portal ready." Ink nodded and pulled out his enourmous paintbrush. The familiar white portal appeared. I looked at the monsters crowded around us, ready to leave.

"Let's go," I said with a wave of my hand and stepped into the portal.