From the exact moment he obtained the Concept Core, Veylan became obsessed with power.
It wasn't something he had obtained by killing a Hollow or anything of the sort. It was something one of his family's ancestors had left behind.
A family heirloom. Something whose value he hadn't recognized right away, only after reaching a certain level of strength did he begin to notice the crystal's peculiarities. And as his understanding of the awakened world grew, as he came to grasp what awaited those who climbed toward the higher ranks, he realized that what he held in his hands was not a simple relic but the very core of a powerful being from the Abyss.
The thing terrified him at first. But it also fascinated him, deeply, completely, to the point where he began experimenting with it. And soon he discovered that there was indeed a way to use an already formed Concept Core to ascend to S-rank.
