Omegaverse

In some stories markings are only valid if both parties have the mark, but I've never seen a manga where only the omega marked the alpha.
It's the other way around, and if an alpha marks an omega they become bonds. This means they can only have sex with each other, otherwise their bodies will reject the person, who's not their pair.
If an omega markes an alpha, but has no marking himself it doesn't come with any consequence.

Oh thanks all. Because I just read a webtoon, mmh don't know if you read it and don't want to spoiler so I don't write the name, where the seme (alpha) want to know who marked him, and the uke (omega) known that it was him and I didn't understand what does that mean, like normally is the alpha that mark the uke becoming mate, I never see an omega marking the uke so yeah I was a little confused. Thanks all

I know that one, in that manhwa, both can mark each other by biting the ears

Ohhhh okay! Thanks a lot!

The consequences that I remember is that aloha can't no longer get hard and can't produce baby to someone. That's why he's furious whoever bite him cause if he didn't find that omega, he won't have his own heir

Oh that makes sense. Well probably I would angry too lol. Thanks for the help

Welcome <(￣︶￣)>