"You're the one"

"Do you mind if I join you guys" y/n asked...

You are a transfer student and you are on platform 9 3/4. You get in the train, but there is one problem... You don't know anyone! There was only one cabin left every where else is full. You decide to join the two gingers who looked A LOT like each other.
Turn out that was the best decision you ever made....

Also all the characters and some parts of the story are from J.K Rowling