Oujisama no Yume Utsutsu

Four years ago, Prince Lulnavul fell into an eternal sleep due to an unknown curse. The king then make a proclamation: whoever wakes the prince will receive any reward they choose...but up until now, not one has achieved it. Now, Witch Sayla, scorned by the outside for being a witch, attempts this task as the 99th contender, not for the sake of the prince's hand in marriage like the princesses before her, but solely for the king's national treasure, the Sapphire of Illusions. Can a witch, who is hated even in fairy tales, be the heroine of this one? Follow Sayla as she goes to meet this sleeping prince inside his dreams.

(Source: Fateful Encounters)