Back to the Purpose Chapter 18:
'Anyways,', Arthur broke in, 'the crux of the matter is whether or not you wish to join us.'
As often happened when a group of people were being asked a question that had ramifications on their life, there was a silent humming as people mulled over it.
But the answer was, what the answer had always been when potential Hetalians had been asked to join:
'Yes.'
'Good, then it's time to tell you all the truth.'
'A little over 100 yrs ago, in New York, a wizard unleashed a great and destructive power that shocked the city and the world. He shouldn't have been able to have control over this power, especially not having it at his age, or as a matter of fact, still be alive. He managed to have, and control, an Obscurus. For those of you that don't know what that is; it's what occurs when you try to suppress your magic instead of learning how to use it. To put it more bluntly, "It's an unstable uncontrollable dark force that busts out and attacks and then vanishes". The fate of this person is something you can learn in History of Magic, later on, but the main point is that we're more likely to produce an Obscurus than any of our peers, even without suppressing our magic. In addition, and closely related, our magic is stronger, a tad more uncontrollable and more prone to blow up, literally, in our face and others.'
Arthur took a breath before continuing,
'Our goal is to make sure that we don't lose control and harm anyone or anything with it. And I'll also tell you something that I and my fellow leaders were told last year: you may have more powers and be capable of doing more than your fellow classmates of your Year, but that's no excuse for going on a rampage.'
'Besides,', Irina's cultured voice rolled over the group, 'if you do try, we three are more then capable of stopping you.'
'And how do you plan to do that?', a joker from the back called out.
'The three of us have the most power of all the members of Hetalia.', she replied, her serene smile still in place. 'That's how we got the leadership last year, despite being First-Years at the time.'
Walking out from the meeting, Elizaveta turned to Francis,
'Do you have any idea why Gilbert and that other guy, Edelstein, look like they could kill each other?', she asked pointing up ahead where Gilbert and Edelstein were openly and hostily glaring at each other
'Edelstein and Gilbert are cousins and 'ave never gotten along', Francis said.
Author's notes:
"It's an unstable uncontrollable dark force that busts out and attacks and then vanishes" – taken with very few variations from Rowling, J.K. – Fantastic Beasts and Where to Find Them – The Original Screenplay, pg. 151.
In the next chapter:
The Feast hadn't even lasted ten minutes, when an odd noise was heard. At first, no one bothered to take notice of it. But when it didn't stop, and even got higher, people started to look around them. It was a Slytherin that first located the source of the noise. It came from the Slytherin banners over their table.