This an ABO universe.
Alphas:
They are at the top of the food chain. Physically strong, high IQ . Both make and females are capable of impregnating. Females don't have retractable penises
Omega:
They are considered to be at the bottom of the food chain. The ate beautiful and are all fertile both make and female. Males have womb.
Beta:
They are considered to be at the middle of the food chain. Only females are fertile no pheromone and make pregnancy. Just like normal humans
