Misa certainly believes in fairytales. She fancies herself as the beautiful princess in the story, and with a kiss, to someday be carried off by a handsome man wielding a sword of light. She had never imagined that her prince would instead hold a book of death.
Raito has always thought that he would be the dazzling prince in the story. He has the looks, the intelligence, the tools to save the world from the evil witch. Raito is the dragon, now, and Ryuuzaki the toad prince.
In reality, the world is a fairytale. The fear of instability is so rampant that humans delusion themselves to stereotypes and fixed roles to hide from the truth. A princess can never be a witch, just as a dragon and a prince can never love each other. Nobody knows who the witch really is, but even a kiss cannot save Ryuuzaki.