A few months ago
Aron could be seen laying on his bed shaking a little as his body was literally forming new blood vessel like pathways in the body, he was sweating a little as his heart was getting upgraded to be able to do the same job but twice the amount.
When the formation of golden vessels finished the runes in his heart started attracting something from the atmosphere, when the minimum amount of it was collected the heart started condensing it to liquid and deposited it to the new golden vessels.
While the heart was doing its job, Aron wasn't the only one in the room, there was his younger brother playing on his playstation, nothing of notice was happening to him but since the room he was in was currently acting like like a magnet of something in the atmosphere, something was changing in him albeit small.