Egyptians and Magicians in Hogwarts

So Yugi, Malik, Ryou and Kaiba are invited to hogwarts. Voldemort is after the Millenium items, and Dumbledoor hopes the boys can assist in the war and Snape takes a liking to them! Two of them land up Griffindor and two in Slytherin, will the boys bring Unity to the school or Destruction? MxM KxJ YxY RxB DxH. Yaoi.