Leda: The Fantastic Adventure of Yohko

The story is that of Yoko Asagiri who finds that the love song she wrote acted as a bridge transporting her to a fantastical alternate world called "Ashanti." There, the ruler of that world wants her song so that he could use it to open a doorway to Yoko's world and conquer it with his armies. Using the artifacts left behind by the legendary warrior Leda who prophesied her arrival, Yoko and her new found friends must stop the tyrant's ambition and return both worlds to their proper place and balance. [Wikipedia]