Fairy Tail At Hogwarts

What happens when one day Albus Dumbledore appears in the Fairy Tail guild asking for help from his old friend Makarov Dreyar? When Fairy Tail appears in Hogwarts Harry,Ron and Hermione gets suspicious. What will happen?? Especially when they think our fellow Fairy Tail members are Death Eaters? Sorry if the characters sound too ooc This is after the Alvarez arc Fairy Tail and Harry Potter do not belong to me