From Starry Heaven:
In order to reclaim her stolen throne, Princess Hibana sets out on a journey to seek out Hakuryuu, who is said to have ascended into the heavens 100 years ago. At the dragon?s palace, she meets Isara, a boy who hates people, is blunt, clumsy, and shy. He is actually a mutated dragon whose red appearance was abhorred and deserted earth!! Hibana exchanges her heart with Isara, can he be her guardian dragon?! And maybe she can reclaim her throne?!