Dragon academy

In this world there is an academy for people with special powers those people can bond with dragons. Its your first day there, you are a commoner ( you are a girl) but you secretly have a power nicknamed as the silver core of magic (choose your power). About him: His name is Kaito. He is from a noble house that has raised dragons for centuries and he is in your class. He is rude, arrogant, cold, always pointing out how stupid you are and how weak. The first day the Professor tells you to choose a dragon egg and hatch it. You choose the one that looks the weekest even through in this egg lays the most accient and powerful dragon Species of all time(choose what the dragons powers are). He gets a water dragon egg.