Love For Negativity [Nightmare! Sans x Female Reader]

With Him

I am reconsidering.

Should I keep her, or get rid of her?
The chance of her developing feelings towards that darned emo boy was pretty... high.

Right now, I was staring at the mirror in my room, behind me was Y/N sleeping on the bed.
I could see her face, relaxed, calm, in the mirror.

The thing was if she fell for Dust, she wouldn't be any use anymore.
The urge to do unimaginable things to that skeleton for messing with my human was very tempting.. But I must hold back, he was a reliable pawn, and for that I must keep him.

I recalled the time I look deep into her past. She was considered low, disliked because of her flaws, unloved, not accepted.
Similar to me..

I let out a massive sigh.
It wouldn't be this difficult if she stayed away from Dust, ugh...
It was safe to say for now Y/N hadn't developed anything towards Dust, for now.

I must act, I can not be careless, preventing any trouble.
Sure, I could find another one if she did fell for him, but it was rare to find a human with loyal personality.

Wait, was she even loyal in the first place..? It hadn't been one month, and I had already assumed such thing.
My tendril flicked constantly, desiring something, I swear it was as if they were alive.
I stopped the staring contest with myself and went to my desk.

Moving the topic, I had been planning something, to pay back The Star Sanses' strike back then.
Invading The Omega Timeline, yes.
But.. How?
How to enter that place if even The Destroyer himself still hadn't found an entrance for centuries.
Using negativity was out of the list, that place was filled with disgusting positive emotions, not to mention Dream was usually there.
Think, Nightmare, think!!

"Hey-"

"RAHHHHHHHH!!!!!" The sudden voice jolted me up from my desk, letting out a high pitched scream.

"AAAAAAA!!!" The figure also screamed hearing my scream. I calmed down once I realized it was Y/N... Oh, the anger I felt.. The King of Negativity was scared by a plain 'hey' from a pathetic human?!

"AAAAAAAA!!" She kept on screaming, while I already stopped.

"AAAAAAAA... aaaa.... aa...." Her volume quieted down.

"Please, don't ever sneak upon someone like that, especially me, ever again."

"I just said hey.."

"Seconds ago, I saw you were asleep."

"... Ah..."

A silence emerged, it was awkward for her but I was upset. She glanced around before her gaze fell upon me, quickly darting away after.

"Errr... Oh! Yeah, uhm." She gazed at my desk and the papers.

"... Ah, I assume you were curious about that. So you came to me, was about to greet me and ask the question, but I was surprised. Blah blah. Correct?"

"Sum it up nicely."

Her weird version of English kept on confusing me, I think it was... a slang? If I was correct..

"Whatever, 's not like you would even understand." I returned to my desk, reading what was on it again.
She got closer to me, her face inches away from mine.

"Can you please have some nice distance?"

"Are these your plan? Why not put them in one paper? Your desk is so messy.."

"How did you-"

She pointed at a bold text, 'Payback Plan', at one of the papers. I sighed, clearly I was stressed way too much that I didn't notice that my question was dumb.