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?
It does not have a typical plot. Most of the end of the story is about characters growing older as time passes and the events that they are involved in. I actually think there was a Netflix movie about Genji several years ago.