My-HiME

There are two versions, anime and manga. Usually if a story is available in manga and anime, both will essentially be the same with only minor variations occuring(e.g Naruto). However, My-HiME is totally different.
Both have the same characters, but totally different storyline. It revolves around girls with extraordinary power, the power of HiME (highly advanced materialising equipment) where they can materialise some kind of robots to fight monster named orphan. In the manga, the Himes need keys-a boy who can help them unlock their 'child'[the robot things]. This I think is the main difference because in the anime, the Himes can call upon their child at will with no help from the keys at all. Both are filled with cool fighting scenes and the soundtrack of the anime is especially good. It has one haunting song, this song(but the accent's so strange..). More infos can be found here

It's Only The Fairytale

Who are those little girls in pain
Just trapped in castle of dark side of moon
Twelve of them shining bright in vain
Like flowers that blossom just once in years

They're dancing in the shadows
Like whispers of love
Just dreaming of place
Where they're free as dove

They've never been allowed to love
In this cursed cage
It's only the fairy tale they believe