Felicia has only explained it briefly, between breathless strikes and surging bursts of swords and magic.
That Morvena… for some reason, is sealed here.
She is the heart of this dungeon.
Years ago, her corruption became too much. It spread, wild and uncontrollable, until Felicia had no choice but to stop her.
Thus she sealed Morvena right here, on the very grounds of Luminaris Academy using the Academy existing magical leylines infrastructures and her own magic. Not to kill her, no—but to contain her, to keep her from spiraling into madness and hurting anyone else ever again.
Since then, the princess has returned every so often, silently, secretly, alone… to reinforce the seal, to keep the darkness buried, and most importantly, to see her wife's face again…
But then… something happened.
Felicia disappeared.
And the years passed.
The seal, without her, began to wither.
And Morvena… changed.