"So Nell… if you don't mind my asking… what made you to decide to join the tournament?" asked Kat curiously.
"It's quite the long story," said Nell with a sigh, "especially because you are a demon. I'm sure the others could pick up what happened with a simpler explanation. I don't mind per say, because I do want this story told, the story of my mother… but at the same time… well yeah it'll take time."
"That's fine I think," said Kat looking at the others for confirmation. When nobody seemed to object she continued, "Well, seeing as nobody else has a problem I'd love to hear it."
So we have the beastkin backstory! If still not quite their reasons for particpating. I actually do have the characters for the 4th team designed now and I intended to introduce them... but this backstory got away from me a bit. At least it gives you a good idea about beastkin culture.