#This au has been taking over my brain djsjsj

[wonderful-bellies]

Size on the Side au Overview

So with my latest f/naf fixation, some friends and I have been inspired and came up with an au universe with a focus on g/t and v/ore. I've mentioned this before and I wanted to make kind of a description post for it because it was def inspired and made for a f/naf au but also its just a really neat universe idea in general!

I'm for now gonna make this just a description of how the universe works and not its connection and how it applies to f/naf.

Size on the Side takes place in a universe where size shifting is an incredibly common and mundane thing. Although it's limited to only being able to shrink. So tinies, but no giants (unless we feel like it cause this is for fun dammit). Predators are also a thing but they have a few lil specifics about them.

Size Shifters

Size shifters in the SotS universe are incredibly common. Not everyone is a size shifter, but it's about as common as needing glasses.

Shifters are restricted to shrinking and returning to normal size. The norm default is human size though there may be those that just prefer to be small. There are some few accommodations for tinies and typically it's pretty normal to see shifted people about. Young shifters especially. Gotta be careful around shifter kids.

If a shifter is stuck at a small size or is unable to shift, it is considered a serious medical issue and they should probably get that checked out.

Predators

Preds in the SotS universe have significantly more different about them and their biology. Preds aren't out of the norm, but they're significantly more rare than size shifters. About as common as dwarfism for instance. Or similar conditions.

Preds are pretty much normal humans with some exceptions. The main trait is that they have a physical need to eat prey at least on a semi regular basis. Going for longer periods of time without consuming prey can result in intense discomfort. Headaches, stomach pains, lethargy, etc. A pred starving themself of prey is very very unhealthy.

Biologically alongside this inherent need to eat there are some few extra traits to preds. An obvious one being a better protected and more elastic digestive system, making is easier to swallow larger or more ridged things.

Preds also have a swallowing reflex. Pretty much anything that goes far enough in a preds mouth, the pred will attempt to swallow. This has led to some really stupid and goofy situations. and a lot of suffering for doctors and dentists with pred patients.

Preds also have essentially "retractable" fangs. Typically they'll have normal dull teeth unless going out of their way to make it otherwise. When feeling cravings, their teeth will sharpen to fangs. This happens instinctually and is usually a give away for preds which are otherwise visually indistinguishable from non preds. A pred is capable of preventing the fangs from coming in to some extent, though it takes a fair amount of concentration and is easy to slip up.

There are some few accommodations for preds, but they are typically few and far between. An example being doctors that specialize in treating predators.

***

between these two, the concept of becoming tiny is mundane and being eaten, while certainly still not common, is not necessarily out of the norm. A person can be any combination of conditions. They can be both a pred and a size shifter, or one or the other, or neither.

Anyways credit to @draconicnomphs, @nightmarevore, and @that-prey-lounge for dragging me into this and helping come up with basically all of it!