Aspheera sat, huddled in the corner of her prison. Her tomb. The wall was covered in scratches, denoting days upon months upon years of her imprisonment before she'd given up- not that they could be trusted, not when she was sealed away from the sun, not when she had to rely on a circadian rhythm that was itself broken from the lack of light.
The sting of his betrayal burned near enough that she almost didn't feel the chill creeping into her bones, centuries locked away underground leading her hatred to fester.
She hadn't broken her promise, not how she saw it, anyways. Humans couldn't enter the valley of the serpentine, and serpentine could not venture onto lands controlled by humans- on paper, perhaps, it was equal, but that didn't account for the reality of who lived were, what had to be done to enforce these laws, humanity controlled vast swathes of ninjago, serpentine were relegated to a handfull of of smaller population centers, humans could travel anywhere on the continent at will, while serpentine were stuck on islands on dry land, only allowed safe passage for strictly diplomatic purposes, and, when the laws where enacted, most of the people forced out of their homes had been serpentine.
She hadn't been defying Wu's promise, she'd been upholding it, no one liked the system, not the citizens of the serpentine valley, not even, she suspected, most humans, Wu himself had been proof enough of that, she'd tried to change the law as the royal sorcerer, but the coward of a king would never defy the so-called god, and so, she'd did what needed to be done. So that serpentine families, once separated, could once again meet, so they'd no longer rely on trade with humans for their food, so human and serpentine could exist on equal ground, so she and that traitor Wu could've been friends in the open.
So, maybe, one day, they could've lingered in the sun