Trying to make sense of the metal…

We know it contains the memories and souls of people from the previous worlds. But what makes the metal able to do that in the first place? Is it some special metal from both worlds and they just never go into an explanation? I had always assumed it was normal metal from each world, but no other material in Aionios seems to exhibit that property.

The game make it seem like it’s special just by virtue of belonging to origin, but I’m not sure why that alone would make the metal special. We see giant core crystals inside origin so I had always assumed the data would be stored in there. I guess I’m just having trouble wrapping my head around why they decided to make the metal special instead of using core crystals as the explanation.

Do you think it’ll ever be explained, or is it just going to be left as is?