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.
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.
One possible plot could be that Natsu gains unique and powerful magic abilities under the tutelage of the two dragons. He might learn different combat techniques and ways to control his fire magic more precisely.
The plot could involve Natsu being sent on a special journey by the dragons for his training. Along the way, he not only masters new skills but also discovers secrets about the dragons' past and their connection to the world. He may face challenges that test his loyalty to the dragons and his own beliefs as a wizard.
Perhaps the plot involves Natsu having to choose between the different ideologies of the dragons that raised him. Each dragon may have its own idea about how to interact with the human world or other magical beings. This could lead to internal conflicts within Natsu as he tries to decide which path to follow. He could also use the combined knowledge from the dragons to solve a big mystery or defeat a powerful enemy that threatens both the dragon and human worlds.
One possible plot could be that there is some sort of misunderstanding or dark magic at play that causes Natsu and Mavis to fight. Natsu, being hot - headed, jumps into the fray without fully understanding the situation. Mavis, on the other hand, is trying to figure out a way to stop the fight without harming Natsu. As the battle progresses, they both start to realize that they are being manipulated and then team up to face the real enemy.
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.
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.
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.
Igneel could be one of the main dragons. Since he has a connection with Natsu in the original story, it would make sense for him to be among the dragons raising Natsu. Another could be Metalicana, as he is also a well - known dragon. Grandine might also be there, considering her importance in the Fairy Tail universe.
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.