>>110161649It's AUs where everyone is either alpha, beta or omega. Betas tend to act mostly like normal humans while alphas are aggressively macho. Omegas have heat cycles, a self-lubricating ass, and a womb.
Alphas lose control of themselves and act like mindless horny animals when there are omegas in heat nearby. A lot of feral behavior is involved, such as snarling like dogs, forming packs, sensing scents and pheromones, knotting and/or biting during sex. Mpreg may or may not happen.
ABO stories seem to be somewhat inspired by Twilight's werewolf/vampire romance stuff. Or at least that's the vibe I get since ABO stories often employ the imprinting/soulmate thing that Twilight had, with alphas marking their partners as their own.
That screenshot above was unusually fluffy. Most of the time ABO stories are disgustingly graphic and soul-crushing.
