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Crossed Unders in a Strip Club	By : Revharem Category: -Misc Video Games/RPGs > AU - Alternate Universe Views: 1461 -:- Recommendations : 0 -:- Currently Reading : 0
Disclaimer: I do not own, nor make money off of Undertale, Underswap, Underfell, Dreamtale, Underlust, Creationtale, Alchemytale, Instincttale, or X-tale, nor any of the characters depicted. This is purely for entertainment.

Chapter List
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Lust Verse Explanation!
So for all you lovely readers who have decided to pick up and actually follow this smut filled drabble that will eventually, hopefully develop a plot worth following, I grant you a background look into just where in the timeline this world is, how it got there, and who we can expect to be seeing in later chapters so that yal know just who we are rooting for as they won’t be introduce as per couples per chapter. I split them up a bit. So, here goes!
As I’m sure you all have noticed by now, we are in UnderLust! I have decided to go with the theory that Dr. W.D. Gaster created the equivalent to a bio weapon that he unleashed upon the monster population due to the birth to death balance favoring the dead. Monster kind was gonna die, so he made this “plague” that just about every monster got infected with and now has an insatiable libido. Thankfully it doesn’t work on humans or those people on the surface would have had a hard time of it when the barrier broke. (Yes, it’s broken already! Monster freedom!) Well, anyway, I figured this made more sense than injecting every monster with Lust as this would make sure everyone got it and nobody had to fear needles. So that’s how it became Lust verse. In this fic we won’t be seeing the King or Queen most likely because they are just too powerful. They are a mated pair and Toriel is a dominatrix to Asgore’s submissive.
The thought I had behind how the barrier was broken is that they already had the first 6 souls, but were having a hard time obtaining the last. A soul of purity. All the humans that fell were quickly taken and raped due to the libidos of the monsters and this destroyed their purity. Frisk, darling that she is, (yes, I’m going with all female Frisks, sorry) manages to escape every encounter unscathed. Sugar Plum, aka Lust!Sans locks her up in the shed, but with the help of our lovely Amethyst she escapes and he becomes her guide, rather than Sans. (Now I know Amethyst was supposed to be a Fell monster, but I forgot, couldn’t remember where he was from, and so put him here. By the time I remembered, it was too late, so suck it up!)
So, anywho! She makes her way through the underground, manages to evade Alphys and Undyne, (no special names for them), as they were too busy with each other in Undyne’s hut. It was here that dear Frisk picks up an item that she knows nothing about and nearly loses her purity. Curiosity pulls her to look in the window, just to see what kinds of monster live here and she gets a little education on the item she found. More on that soon!
When she gets to the lab, rather than a killer machine, she finds our depressed sexy Mettaton. Now I don’t know of any switch that will turn him back, but Frisk plays with him and helps cheer him up. Amethyst has to come along to get Frisk to move along before Alphys gets back and while Mettaton’s sad at Frisk leaving, he is happy to meet another non-lusty monster. (So Mettaton may show up later in the fic, not sure yet. Sorry but he ain’t paired with Amethyst, that’s someone else.) When we get to the corridor, there is nobody there, as it would have normally been Sans, but he’s busy elsewhere. Ehem… yeah so she just slips right on through and runs smack into queen, who is none to please at being disturbed until she realizes that hey, this kid would be a good way to shut up her mate! Or make him howl more, both thoughts were pleasing.
This is where that item that Frisk picked up comes in! Frisk can hear the king saying all kinds of rude, crude, and otherwise sexual things to get Toriel to come back and help him finish. Telling the queen that if she spares Frisk and lets her live, she will not only break the barrier, but also give her a token to quiet her man. Intrigued, Toriel demands the item with the proposal of if she likes it, she will spare the human.
Young Frisk produces a large red ball on black ribbon straps, a ball gag! She had seen Undyne explaining its use to Alphys for Alphys to use on her, and while Frisk didn’t know why sounds would need to be muffled on friends, she knew the king was loud and the queen seemed to want him quiet. Taking the item, the queen vanishes into the other room and shortly there-after, the sounds from the king were muffled. The queen poked her head out the door and told Frisk she was free to go, and so she did. Flowey doesn’t make an appearance, thankfully (cause I forgot about him, oops) and so Frisk makes it home, breaking the barrier and is quick to inform police of what she has gone through.
It takes years, but eventually things calm down and certain rules are set for the monsters and human so a fragile peace is made. There a monster areas and human areas. The underground will forever be a monster area, there are towns on the surface that are entirely monster inhabited, and these are designated monster areas. In monster areas, the rules that applied in the underground still hold sway, fuck or be fucked. If a human is caught and molested in these areas, it is their own fault. They take that risk in entering and there are many signs to warn travelers of the area before they enter. Some monsters have taken to trying to live in human areas. In these neighborhoods, the property of the monster is considered a monster area, but has higher, more human rules, inside the house though, that is all monster. The town is required to set signs in the vicinity to let people be aware of the monster presence and there are online trackers so people know if one lives in the area, similar to the Megan’s Law that is enforced in the USA. While in public in a human area, monsters are expect to behave properly though. Not all could do this, so a lot of them stuck to the monster areas and the underground.
Frisk grew up and while not nearly kinky as to build a relationship with a monster, still kept in contact with Amethyst and ended up living with Mettaton on the Surface in a human area. They look out for each other and once he proved himself, Mettaton became a math teacher at the local school. (Guess that’s what happened to Mettaton…oh well, still sounds great for him. That just popped up now as I was writing. That, my beauties, is how my writing is done!)
Portal and Au Explanation!
Well, as I’m sure yal have noticed, the title is Crossed Unders in a Strip Club. Well, that’s because this isn’t just a Lust fic, this will have characters from other verses, some of which I have never seen written about before. I don’t have a tumblr, so I can’t really look up there, I just find bits and pieces while looking up marvelous devian art of sans and the amv’s. In our Classic timeline, Gaster still lives, (whoop whoop) and was tracing the way the timelines could shift if something were to happen to make a worldly change. During this study, he ended up opening a void rift and it just so happens that Fell Gaster had been doing the same study, of for different reasons. Spikes (Fell Gaster, darlings, another self-made name, Fell Gaster is Spikes) has more backbone and actually reaches into the portal and ends up grabbing and pulling Gaster through to his universe. Both interested in the anomaly of meeting an alternate version of themselves, they studied the rift a bit more and soon found a way to anchor it and found many other verses besides. This became a part of the underground and the portal was anchored behind the skelebrother’s house at Spikes demand. Spikes is a third brother to Sans (Fell) and Papyrus (Boss) while Gaster is just a friend from New Home.
Now some of you who over analyze stories, may ask, well, if the portal is left open or monsters visit this Lust verse where this bio weapon aimed at monsters was set of, wouldn’t they just end up with the same lust problem? My answer: No, but good question. I’ve thought of this. Once the barrier was broken, the gas or whatever that originally infected the underground was released and in the ten years since had become quite diluted. It is still there, but not nearly as toxic. To outside monsters, it will stir them up a little, make them possibly a bit euphoric or lusty, but not in any lasting way. Also, with this dilution, the lust monsters are able to function with society better. They can interact and do more than fuck the nearest object or creature. They now have much more restraint which is why they are capable of merging to a point with society.
Now, with the portal open in so many verses, the coming and going of monsters from one verse became a common thing, but not so common that everyone was doing it. After all, the portal was located behind the skeleton’s house in Snowdin, a small tucked away village on the deep edge of the underground. The lure of the surface in UnderLust was quite powerful, but monsters quickly abandoned the thought of jumping from their home to there just because of the influence that the native monsters had. Most other verse monsters didn’t want to be associated as being that way, so continued to wait for their freedom in their own verses.
This fic will be including monsters from many verses as I’ve mentioned before, currently they include Dancetale (Sans – Hip), X-Tale (Sans – Cross), Dreamtale (Sans – Nightmare), UnderFell (Papyrus – Boss, Sans – Fell, Gaster – Spikes), UnderLust (Papyrus – Razzy, Sans – Sugar Plum, Teal – Grillby, Amethyst – Grillby #2, Undyne, Alphys), EchoTale (Frisk - ?, Gaster!Sans – Echo), Underswap (Papyrus – Honey-kun, Sans – Berry), and Creationtale (is that what Ink and Error’s verse is called, idk) (Sans x 2 – Ink and Error), and Undertale (Sans, Papyrus, Gaster, Older Frisk).
I won’t tell you yet just who is paired with who, but I will list each of their names and their verse at the beginning of each chapter as this has been requested by a couple people and makes perfect sense as I’m using so many verses and making some of my own names.
Finally, one more topic I want to hit on, then this over-long author’s note/story explanation will be done, my apologies!
In the first chapter, it is mentioned that Sugar Plum and Razzy are a marked pair by Teal. What is going on there is that if a monster choses a mate, they can mark them with a bite or some such and it will leave a lasting mark. This is similar to how humans exchange rings and is supposed to be mutual. The one that placed the mark is then able to feel the emotions to a point from the one that they marked. It is supposed to be a way of communicating over distance or making sure that both are safe. In times of intimacy, it can prove to let the other know when too much is too much. This particular tradition is not just for Lust monsters, but for all the verses in my writing. If you don’t like biting, sorry, there may be a lot of it. Not all pairings in this are already set when they are brought in, some are meeting for the first time, some it may be an ongoing dating, but not affirmed yet. By the end though, everyone will be mated. This will be a happily ever after-ish fic. I’m not planning on breaking any more verse barriers, so that a pouty face for all our buddies in the other worlds. (“Sorry guys!” author shouts to other verse pals)
Well, enjoy and hopefully I’ll be able to get some more actual story hammered out soon
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Crossed Unders in a Strip Club