A melancholy tale. This term emphasizes the overall mood of sadness and gloom in the story. For instance, a story about a lonely old man reminiscing about his lost love and all the opportunities he missed in life can be called a melancholy tale.
Dirge. A dirge is a slow, sad song or poem, and it can also be used to describe a story that has a very mournful tone. It's not as commonly used as some other words for a sad story.
Well, 'noticed' is another word for'seen'. When it comes to 'novel', 'original' is a great alternative. The word'seen' implies the act of visually perceiving something, and 'noticed' has a similar meaning but might imply a bit more of an awareness. 'Novel' means new and different, and 'original' also gives the sense of being new and not a copy.
Gift, rejected, sad. Imagine you put a lot of effort into a gift for someone. It could be a handmade item or something you carefully selected. But then that person rejects the gift. It makes you feel sad because not only is the gift not appreciated, but also your feelings behind it are ignored.