User blog comment:JayeMalik'/Hogwarts' Buddy System/@comment-24344137-20180403030657/@comment-26090648-20180403092330

I knew I was forgetting something! Okay, so for the year this international student is at Hogwarts, they'll be an expansion character and won't count towards your main count. That said, if you choose to keep them after their stay at Hogwarts is over, they'll move from expansion to permanent.