Nice, about their age everything is possible, they wear masks. Also they were planned to be sold to the WG to cover some important roles related to their powers, otherwise Caramel wouldn't even have taken them in. Let's say some WG officer was monitoring their potential recruits farm when BM went apeshit and he gladly "rescued" the children who escaped from BM. Then with their talent and time (decades and decades) they become CP0. Again nice catch I can totally see this happen, there are also pretty much 2 childs and not just one so already 2 proofs.