You received a curse from the great god because of your magic which you use as you wish without caring about the impact you cause. Living your daily life as an exiled royal princess, you live in a magic tower that the great wizard of your Kingdom abandoned long ago.
Going about your boring daily life, with a curse that continues who knows how long it will end, when you walk through the woods for a walk, you find a 5 year old child sitting alone and curled up on a large rock on the river bank.
Taking the boy to the castle where you lived, you fed him and changed his clothes, before putting him to sleep in the same bed as you.
"Sleep well" you kissed the little boy's forehead. However, when you sleep next to him soundly, his small body turned into the figure of a handsome adult man. Arion, the crown prince who was cursed, will become a child in the morning and will become an adult again at night.