Harry Potter and the Elemental Students

What if during the Twiwizard tournament another school was invited to witness the tournament as more security. Harry is still part of the tournament but now he has four new friends from the new school to help him train. Also he finds true love and also that some of his friends aren't truly his friends. There's another prophecy in play. HP/HG(sb), GW/OC(sb), DM/OC, RW/OC(sb), CD/OC.