Nitrolith - Hero Party Must Fall v.5.3

Overview:
The evil demon hordes have risen once again led by the Demon King and so the Hero and his allies are trying to thwart their advances.
You play as such ally, but you have a big secret. You've been sent by the Demon King as a spy in order to destroy the Hero's party from within.
Will you be able to pull it off? Or will you fail in your mission?​