My Babysitter's A Vampire

Ethan Morgan, is a normal boy once but when he incounter a new vampire or fledgling, Sarah who were bitten by her ex-boyfriend, Jesse. Who were two centuries older than them. And Ethan seer ability is kick in when he touch Sarah. And now that they know who and what he is, and what his plan where in he need a box called "Cubile Animus" a Latin word for 'Nest of Souls' for his plan of having a revenge in the family of Morgan. But they team up and beat them all except Jesse, because he escape and go to where his family lies and Ethan, Benny and Sarah beat him with the souls Jesse gets in the movie night.

After that night they became friends and have everything to solve every mystery in WhiteChapel but when they open the Cubile Animus to save Sarah, Jesse who is now dead is awaked and seek revenge bit Ethan and Sarah save him by sucking te venom and drink Ethan's Blood. And have to fight evil until the end. But what wound happen if Ethan, is not a fully human when Sarah saved him? What would happen if it turns out that it left some of Sarah venom and slowly it transform Ethan into fledgling? What would if Sarah and Ethan where save by Jesse's sister and treat them as a Royal Blood Vampire, and what would happen if some enchanted rings appear in their hands and they change into more powerful vampire which is the Royal Blood Vampire?Would them love each other or hate each other.
But there's one thing, what would happen if they find out that they are not just ordinary vampire, what would they do if they are The Royal Blood Vampire?