AR∀GO belongs to Arai Takahiro. The Albions, too, belong to him: I actually just stole whatever info there is about them and expanded on it, with lots of my own headcanons. So they're OCs because they literally have two panels as well as a scene listing of their names.
The sentence in the summary is, indeed, true. You can demand explanations for the OCs- I will provide them. I swear they have a purpose. Except in kid fics. Please note that kid fics are, literally, self indulgence. Two kids are double the self indulgence.
There are claims nobody could confirm.
Here is one:
"We spent a week basically playing hide and seek with a Black Dog," Tim said, pushing the vegetables in his giant pan. "Until Kevin accidentally chased it away with half a gallon of iced lemonade."
Coco glanced at Colo, eyebrows knitted in worry.
Arago's look of disbelief made Fraser laugh.
"And Kevin was just waving it around because Maria, the cook, rarely wanted to make lemonade because there's twelve of us, so he got excited. He was like, what, eight? But iced drinks and waving around usually resulted as well as it would and the Black Dog scampered away, leaving the burned trail you see on the fence outside."
Seth realised he had been rereading the same three words over and over again.
"And the best part is that the Black Dog was following us because we found some old magical weapons so we basically hopped around throwing artefacts at each other for a week, until we saw a passing ùruisg and asked for their help to hide it," Oz added. "The ùruisg looked perplexed, but did it after we offered them cream."
"Which was why we had lemonade to begin with," Edna continued.
"I don't follow," Arago said.
"That's why the lemonade is the sacred drink of this house," Gillian concluded. The Albions then moved on to another topic as Tim finished cooking lunch, dumping it all on a huge plate and serving it. Amidst the chatter, Seth could hear Arago's little "What?" and see the confused looks Coco and Rio shared, as well as Joe's raised eyebrows. He decided to give them a pass. This was their first time.
By claims Seth meant the ridiculous stories the Albion made up. He had no idea who taught them to be storytellers, but they desperately needed to find a better teacher, because if Arago was starting to be suspicious of the stories, then they could not convince an immigrant who did not speak English.
A/N: I won't even explain this one. Let the confusion get the message through.