Undertale x Bnha Crossover (Being rewritten in another book)

Nightmare x Killer ig

(I got a little bit of motivation, but only for a damn filler. So here's some Nightmare x Killer stuff)

Nightmare's POV

I was sitting on the UA building, watching all my "classmates" train. They look like tiny ants from up here, I thought, You can hardly even see them. After a while of this, I looked toward the city in the distance.

"Damn... that's a big city," I heard from behind me. I whipped my head around [keep in mind, he is in his passive form]. To my surprise, it was Killer... I think. I squinted my eyes.

"Killer?" I got up cautiously, ready to strike if I needed to.

"How'd you know?" he said growing tense.

"It's me, Nightmare. When'd you get here??" I asked.

"Oh... I just got here actually," he said while he threw a knife at me. I caught it with one of my tentacles, but my tentacle quickly disappeared after catching it due to the fact the world was basically draining my magic. "Why do you look like that? And why are you so... short?" he asked. ...Short... I thought as I sank back down on the edge of the roof.

"Well, first of all, I'm not that short," Killer gave me a look of 'Yes, you are.' "And second, this isn't our universe and it turned us human."

"What do you mean us?" Killer asked.

"Some of the gang is here along with some others," I said shoving the question away. "Anyway, this fucking world is basically draining all of the Sans' power away."

"Ah," Killer said while he sat down next to me.

The sun started to set after a few minutes.

"It's nice to enjoy the sunset after so long," Killer said.

"What do you mean? It's not like we're trapped in the underground like the rest of them," I told him.

"Well, we're always too busy to enjoy stuff like this. We're always fighting someone or destroying an AU, ya know?" he said leaning on his hands behind him. I looked at him while he stared at the sunset. The light reflected off his face, creating a nice glow to his now fleshy skin. I turned back to the sun quickly while my face heated up.

"I guess you're right... from now on, we'll take more time to enjoy the little things. How does that sound?" I said turning towards him again. He turned toward me.

"That sounds nice. I'm sure the rest of the gang will like that," he said smiling and facing back towards the now darkening sky.

"To be honest, I forgot about them," I said with a straight forward voice. Killer laughed and I blushed. I turned back towards the sun and reluctantly laid my head on his shoulder.

"I can't believe I'm taller than you now," I chuckled while I huffed.

"I'm not that short now," I protested.

"Ehhh, you kinda are," he laughed some more.

We continued to argue that I wasn't that short while Killer watched me, laughing. Killer's eyes locked onto my lips and slowly leaned closer to my face. I didn't notice till he grabbed my chin and pulled me into a kiss. We both melted into it.

~Bonus~

"Man, I love when they get together at the end," Epic said while wiping a tear.

"I know right? It's beautiful," Cross agreed while putting his arm around Epic's. They swayed back and fourth while "crying." Killer and Nightmare spun their heads around to see Epic, Cross, Ink, Geno, and Dream.

"HOW LONG HAVE YOU GUYS BEEN STANDING THERE?!?!?" Nightmare screamed, pink as ... as .... I don't know. You guys come up with something, I'm to tired.

"The part where you guys were laughing," Geno said while walking up to them and sitting next to Killer. He took a sip of some coffee he had.

"That's embarrassing," Killer stated, rubbing the back of his neck while blushing.

The rest of the Sans' there followed Geno's steps. They all took the time to enjoy all the city lights turn on as it got darker and darker out.

(Here's your guy's chapter, well.. filler. It turned out longer than I was expecting, but I figured out how to write some sort of fluff so yee. You guys are free to comment a ship if you want. Anyway, see ya'll in a few months✌️)