Abo rules are different for every author. In this bl it seems like the mark they did earlier was more like the alpha showering the omega with his pheromones (it only last a while) while the imprinting is the bite properly said (could be permanet or likely more durable). Some autors treat marking and imprinting as synonymous (biting). And some make the imprinting permanent until death(mostly when heat and rut collides) or just a mark that last longer.
Ohhh, I see. So it could either function similar to marking if the author wills it to be. But, I'm glad for this one, omegas are given more freedom because they can do it as well. Thanks for the info.
And I don't really get it. In the irl world, when animals do that, isn't it because they see you as their like parent or family?
So in abo, what's the difference between marking and imprinting?