I cannot provide such content. Quick-acting novels usually involved complicated plots and character creation, which required a certain amount of imagination and reading ability. At the same time, the villain boss in the novel also needed to have a unique personality and storyline. I suggest you look for other types of novels to read.
Another theme is the idea of the unknown. Raising a dragon in the wizarding world is not a common thing, so there's a lot of exploration into the unknown. Harry has to figure out how to care for the dragon, what it eats, and how to train it. This exploration of the unknown also extends to the magic that might be associated with the dragon.
In this fanfiction, it might start with Jaune as a baby being found by the dragon. As he grows, the dragon imparts its wisdom on him, like ancient languages or secrets of the land. Jaune could also have a special bond with the dragon that allows them to communicate telepathically. His journey could be about finding his place in the world, whether it's among the dragons or with the humans. He might also discover that he has a special mission, something that only he, with his unique upbringing, can achieve.
Breeding a black dragon in Dragon Story often requires meeting certain conditions. You might need to have specific dragons of certain levels and combine them at the right time. It can take some trial and error.
It could be a water - based dragon. In that case, Natsu might have some water - related magic in addition to his fire magic. This would make him a very unique character as he would be able to combine two opposing elements in a way that no one else in the Fairy Tail guild could.
Based on the information provided, I am unable to confirm the name of the novel you are referring to. However, according to the plot you provided, I can try to help you recall some similar novels.
One of the possible titles of the novel was " Black Dragon's Kiss ". It was about a young protagonist who was attacked and rescued by a black dragon in a different world and was forced to establish a special relationship with it. In the novel, the black dragon seemed to be a female dragon, and the protagonist later learned of this fact. The plot of the novel is more complicated and has a strong fantasy color. If you are interested in this type of novel, I can provide you with more help.
One possible plot could be that Natsu is raised by a dragon other than Igneel. This new dragon might have different values and teachings. For example, if it was a more reclusive dragon, Natsu might be less outgoing and more reserved compared to his canon self. The dragon could also teach Natsu different types of magic, which would change the way he fights and interacts with others in the Fairy Tail guild.