The Omegaverse has abstract premises for which it could be considered a fantasy genre according to the conventions established by Todorov, but the high specification of its characteristic elements suggests that it could also be considered a literary genre in itself.[3] Its main peculiarity is that characters have two sexes: a main one (male or female), decided by their external sexual organs, and a secondary one, that manifests during puberty, determined by their internal reproductive system.[4]