The Day That Change Himself [Oikawa x Sugawara] [Fanfiction] [Haikyuu]

Explanation of Omegaverse (Part 3)

Betas

Betas are the normal, everyday guy. They can still breed with other Betas, but they cannot breed with Omegas or get them pregnant. With a female and male Beta, they can reproduce that way. Sometimes even a female Alpha and a female Beta would be able to reproduce.

Omegas

Omegas are the softer and more gentle of these roles. They are the nurturing parents who raise their children and they are the only ones in here who can get pregnant besides Beta females. The female Omegas use their systems as normal, getting pregnant that way and then nurturing the child like they should. But for the males, it is very different. All Omegas go through heats, it all depends on the author how often they go into heats. During this time, they are most fertile. But the pre-heat is what the males have to go through. Since they only have one hole, their rectum, that is also doubling as protection for the female parts. During pre-heat, the parts start to grow after they empty their rectum completely. The reason they do it is so nothing gets stuck in the uterus. But Omegas are the smaller ones with less muscle and smaller penises if they are male. They love to take care of children and all that parenting stuff.