Nah. Ya know all those monsters ya see in mythology and stories? Centaurs, Lamia, Oni, Shapeshifters, Mermaids, Zombies, and fuck ton more species... yeah, they're all real and intelligent like you and me. Liminal species, or Extra-species works too. They all more or less with drew ta isolation a looooooong time ago with only some of 'em secretly interactin' with humans still. The government knew 'bout 'em though and they worked together ta keep the lid on any information from gettin' out. Both sides got tired of this though, and 'bout three years ago, the existence of liminal species were revealed ta the general public with the Interspecies Exchange Bill bein' put in place.

[Zombina honestly has no idea how either side kept the lid on it for so long.]

It's been an whooooole big complicated process of integration from there. Some people are more acceptin' than others, while a lotta the less cute and cuddly liminal species are havin' a harder time being accepted. The Interspecies Exchange Bill was kinda rushed out too, so there's a lotta loopholes and bugs that need ta be fixed or worked around.