The Red Swan (The Demon vs A Dancer)

Ramona was forced to seal Demona using the shards of her heart to destroy the dark magic power that had been awakened. However, a hundred years later, a wizard girl named Lyxia, fell in love with a human and began to attract the human's attention with her dance. 
Due to a rule that wizards should not love humans, Lyxia began to have an evil intention, she wanted to control these two worlds under her hands so that she could erase that rule, and making that human male, her lover. Her evil desire had made the dark aura inside her eventually break Demona’s seal. 
Demona then took her body and kill her, then started to look for victims to strengthen her dark magic power so that she could rule both worlds. Feeling guilty, Lyxia then asked to be reincarnated so that she could fight Demona, however, after she was reborn as Ixy, she did not remember her original purpose was to defeat Demona. 
The only thing she remember was to dance. Demona knew that Lyxia had been reborn, so she began to mess up Ixy's life with the help of her adopted daughter, Krahe, so she could not remember anything from her past. 
Could Ixy defeat Demona with her dance and make Hideki her true love?