Obviously, Natsu is one of the main characters. And then there are the twin dragons, though we don't know much about them yet from just this title. But they are sure to be important characters as they are in the 'vs' situation with Natsu.
Well, one interesting plot point could be the unique magical battles. Natsu might use his fire - based magic in creative ways against the twin dragons' powers. Another could be the character development of Natsu as he faces this new and challenging duo.
The main character is Natsu, who has a lot of fans in the Fairy Tail universe. The twin dragons are the antagonists in this fanfic. They could have a complex backstory that led them to face off against Natsu. Their powers and abilities would be designed to give Natsu a tough fight and keep the readers engaged.
Another plot point could be the relationship between Natsu and the twin dragons outside of the battle. There might be some backstory revealed about why they are fighting. It could be a case of misunderstanding, or they could be fighting over a powerful magical artifact that has significance to all of them.
Well, perhaps Natsu uses his powerful fire magic to take on the dragons one by one. He might start by finding a strategic location to face them, like on top of a large mountain where he has a better view. Then, he'd use his signature moves like Fire Dragon's Roar to blast groups of dragons at a time.
Lucy might also be an ally. She has her celestial spirits that could be a great help. For example, some of the spirits like Leo could be very powerful in combat against the dragons. Also, Erza would be a great addition. With her various armors and combat skills, she could hold off a large number of dragons while Natsu focuses on the more powerful ones among the 10000.
They could be two well - known dragons from the original lore. Maybe Igneel, Natsu's father figure dragon, and another powerful dragon like Acnologia. However, in fanfiction, they could also be completely new dragons created by the author.
Well, in many fanfictions, it could be Igneel and another dragon like Metalicana. Igneel is Natsu's adoptive father in the original series, and Metalicana is Gajeel's dragon. Combining them in a fanfiction as Natsu's caretakers could lead to some really interesting character dynamics.
In many Fairy Tail fanfictions, the battle between Natsu and Acnologia is often depicted as extremely epic. Natsu's fiery determination and his unique dragon - slayer magic make for an interesting contrast against Acnologia's overwhelming power. Some fanfictions might have Natsu discover new forms or powers in order to stand a chance against the fearsome Acnologia.
Well, of course, the twin dragons themselves are likely to be the main characters. They might have names like Zephyr and Nova. Zephyr could be the more impulsive one, always ready to take action, while Nova is the more cautious and thoughtful twin.