As you can see in the title is this an alpha/omega/beta au. If you don't know what that is I suggest to look it up to understand and to understand the anatomy of each one. 

There's a book on wattpad called The Unofficial Guide to the Omegaverse by Velvelyami

They explain it really well if you want to understand it better

My ocs are alphas 

This is an 18+ au, all our ocs will be above the age of 18