Because they were being hunted by Royals
I don't get it... Weren't the Royals hunting them BECAUSE they were making and using the VS solution.. I mean, they weren't hunting them before they started using it... Or did I miss something major...
I may have to re-read it, but I took it as the pure blood royals were hunting the half-bloods. So they invented the VS solution as a defence. Ands since Ryan loved his sister so much, he helped them. (like I said I'm going to re-read this story again, I could have it all wrong XD)
Aaah sounds reasonable enough... though you're right, I might just have to re-read this story too ^^
Nothing in this story was leading up to th fact that Ryan and his sister were behind the VS solution back then... And I hope they at least give us a reason to why his sister wanted to make the VS solution in the first place!