Lucy is also a possibility. She is intelligent and has a big heart. She could understand Future Rogue's situation and offer her support, whether it's through her celestial spirit magic or just her moral support.
In this fanfiction, Natsu and Mavis' married future could be one where they build a small cottage near the guild. They have a peaceful life, with Natsu going on occasional guild missions while Mavis stays back to tend to their home and garden. Their days are filled with simple joys like cooking together and sharing stories by the fireplace at night.
Another way is to give him new powers or abilities that he has to learn to control. This could lead to him facing challenges and making mistakes, which in turn would help him become a more well - rounded character. He might also have to teach the present - day Natsu about these new powers, creating an interesting dynamic between his past and future selves.
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.
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.
At first, it might be a bit tense. Natsu would be full of questions and his future self might be a bit reluctant to share everything. But as they start to talk, they could become more understanding of each other.
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.
The 'Days of Future Past Rogue Cut Story' mainly focuses on the complex time - traveling plot. It involves the X - Men trying to change the future by going back in time. Rogue plays a significant role in this cut. Her powers and her character's development within the story add depth to the overall narrative as the X - Men fight against the Sentinels and the dark future that awaits them if they fail to change the past.
Yes, there are likely some interesting Natsu vs Ace fanfiction works out there. On FanFiction.net, you can find stories that explore different aspects of their relationship or a potential battle between them. Some works might focus on their unique powers and how they would interact in a fight. Another place to look is AO3. There, authors often bring in creative interpretations of the characters, so you might stumble upon a really engaging Natsu vs Ace fanfiction that delves deep into their personalities and the 'what - ifs' of their encounter.