#ao3 tags for utmv stuff are basically only character tags

[undertale-fic-librarby]

I found the AO3's filtering confusing, so I hope you can help!

Could you find any Killer x Reader fics that focus on him exclusively? Thanks, librarian for all you do! <3

Howdy, thanks for asking! Here are some fics that might fit what you're looking for!

Poor Little Meow Meow by Mystique, TallDumbass (Explicit, Incomplete)

Wow, this skeleton monster who came into the clinic you work at sure does keep adopting stray cats. He's kind of an idiot too, and his jokes are really inappropriate, and he may be a little excessively stabby... You maybe might possibly be falling for him though? But good luck getting him to express a single genuine emotion lol. AKA, two idiots who are bad at emotions bond over cats. A lot of cats.

SAVE | LOAD | RELOAD by Mystique, raven_bones (Explicit, Incomplete)

You fall down a hole in a mountain. We've all heard this one by now... But the vast underground civilization you find yourself in is empty and seems long abandoned, or at least you think it is at first. There is someone stalking you along the way, and he seems very, very interested in you. But you have more Determination than him, so maybe you can turn this game of cat and mouse around in your favor?

Élan Vital by Breadeagle (Mature, Incomplete)

“Something Slithers within the Fog, Something Scurries within the Mist. Something Found whilst on a Jog, Something Killed without Resist. One has come from beyond this Verse, Serpentine venom coursing through the Heart. One shall rise, in the name of Just Deserts. A Mouse Poisoned shall tear them both Apart. Obsession grows, one mind shall Break. Metamorphosis in fracture of angel’s Wings. Is it worth it for the Snake? For if the Mouse is poisoned, neither truly Wins. Thus is the Fate of Mutual Destruction.” A Story of Change, of the Descension from Heaven and the Path to Hell. You are an Agent tasked with finding answers for recent murders that have befallen your city. You wanted only the best, and you could never have foreseen the future that would befall you following this case. While categorized as Enemies to Lovers romance, please be mindful of the tags.

Bitty Bites by resurge (Explicit, Complete)

He’s the bane of your existence. Until that night.

withered rose. by paradiseblues (Mature, Incomplete)

in a small town on the further outskirts of Ebott lies a sweet and cosy flower shop. which you just happen to work at. a skeleton walks in, what's he looking for? a heart? no dumbass, he's looking for a 53 inch rose bouquet! get back to work! there's no punchline here. ... Where you, a hopeless romantic who sits in their lonely flower shop, encounters your favourite customer who apparently needs the largest roses in stock. Can you handle the idea of him possibly having a lover already? Or will you tumble down like a house of cards?