It's probably a story about a woman and a man.
A hodgepodge of semi-fantasy Western magic.
Introduction:
In the depths of the ocean, there is a mysterious island. There is an ancient race living on the island. They have beautiful songs and powerful magic, and they established the country Astrait.
The girl Alice was born on this island. One night, she quietly entered the territory of the royal family Vallit alone, met Prince Sabos, and was captured by his singing. However, as a commoner, how can she win the love of Prince Sabos? After all the hard work and attempts, what can Alice gain?
She did not expect that this unrequited love would not only change her destiny, but also bring an incredible ending to Astrait...