In this world, there was a lack of sane people.
Some are driven insane by their belief, some by their desires, some by circumstances, and some by their emotions.
It was almost fate for one to gain power while losing their sanity. And the only ones that can be considered sane were the powerless who had no say in the world.
One can think of it as a transaction, they gain power in return for corruption, whether it is physical or spiritual. Even a pure power like Remira's was not immune to it. The proverb that power corrupts can never be proven wrong. There were no exceptions to it.
The Current Remira was like this, the power gave her arrogance, and she was confident to break through any obstacles thrown her way. All she prayed was that her actions didn't scare her opponents and she found them before its too late.