Ga-Rei: Zero, Zetsuen no Tempest Recommendations
In a way, I feel that both series are a bit related to each other.
Both series has two prominent female characters as the main characters. In addition, they possesses supernatural abilities of their will.
Both series has a mystery like feeling to them along with drama, action, and some thriller like endings.
Both series also holds secrets regarding one of the main female characters as a prominent plot device.