 Both (original slash and original yaoi) are terms that are considered somewhat controversial by some slash fans since they feel that the term ‘slash’ can only refer to works of fan fiction and not original works.Omegaverse is a subgenre of speculative erotic fiction that originated as a subgenre of slash fiction.In Omegaverse works, humans are either dominant "alphas", neutral "betas" or submissive "omegas", and they exhibit sexual traits and behaviors based on those of wolves or other wild animals.