Need Help For My Story.
 

So i want to make this story called: Why Did The Dragon Abandon His Pheonix.
So I need 2 things. 1: can Someone tell me how to say pheonix in japanese. I want pheonix to be his last name.
2. Can you write the title of the book in japanese. Why did the dragon.....

Basically I want the Guys name to be: Ryu Phoenix ( in japanese)
So Dragon Phoenix.
And I want To know how to write : Why Did The Dragon Abandon His Phoenix.
In Japanese. Thank you.