Earth Maiden Arjuna

When a girl named Ariyoshi Juna has a severe accident, her spirit turns to light and rises out of her body into the night sky, where she catches a glimpse of Earth a few months into the future. She sees the planet on the brink of total destruction, ruled by the merciless demon forces called the Raajas. Then a person named Chris Hawken gives Juna a "power stone" and tells her to use it to save the Earth. The power stone lets her call up an "aura suit", which activates and enhances a person's dormant special powers.