The Tale of Genji is a story about the son of an ancient Japanese emperor
That sounds interesting. Is there a book out or has a movie been made ?
Well, it is sometimes called the world's first novel due to its age. In the story Genji has a romantic interest in a concubine named Lady Kiritsubo. 
Wow, the world's first novel sounds fascinating to me. I would like to know more.  Would you say it's a love story ?
Some look at it as the Japanese version of Romeo and Juliette and in that regard it is romantic. There is more to the story however, his father denounces him and he becomes an imperial officer. It portrays his internal agony in the latter half of the story.
That sounds really good. I definitely want to read it now. Can the book be found in my local library ?
It would not be in a modern novel format. It is embedded in a compilation of stores in an old Japanese book, the name has something to do with Illusions if I remember correctly.
 The more we keep talking about this story, i actually do think i have read some of this before. It has been awhile though. Does it end tragically or happily?
make use of a plot; instead, events happen and characters simply grow older. One remarkable feature of the "Genji", and of Murasaki's skill, is its internal consistency, despite a "dramatis personæ" of some four hundred characters. For instance, all characters age in step and the family and feudal relationships maintain general consistency.
One complication for readers and translators of the "Genji" is that almost none of the characters in the original text is given an explicit name. The characters are instead referred
details within the illustrations are important in learning the meaning of the story. The clothes, postures, actions, and facial expressions of the figures aide in further explanation of the text.
Well-known examples.
There are many well-known examples of emaki. One of the most studied is the Genji Monogatari emaki. The Genji Monogatari emaki is the first handscroll of the Tale of Genji, a story often considered to be the world's first novel. The story follows Genji, the son of a Japanese Emperor