One great 'Natsu x Erza time travel fanfiction' is 'Time's Twist'. In it, Natsu and Erza are sent back in time due to a magical mishap. The story beautifully explores their relationship in a different era. They have to deal with the past versions of themselves and their guild mates while also trying to find a way back to their own time. It has some really exciting action scenes and heart - warming moments between Natsu and Erza.
One possible plot could be that Natsu and Erza are sent back in time to a crucial moment in the history of their guild. Maybe they go back to the time when the guild was first founded. They could end up having to protect the founders from a threat that was long forgotten in their own time. This would give them a chance to see how the guild started and also change some things for the better in the present.
Natsu's character could develop by learning more about the history of magic and his own dragon - slayer powers. In a time - travel scenario, he might discover new ways to use his magic or even find out some secrets about his past that were long lost. This new knowledge would make him more powerful and also more mature as he realizes the importance of certain things in the grand scheme of things.
One popular theme is changing the past. In many of these fanfictions, Natsu and Erza go back in time and try to prevent some bad event from happening, like the destruction of Fairy Tail in the past. This gives them a chance to rewrite history and also shows how their actions can have far - reaching consequences.
In many fanfictions, Natsu and Erza often have a complex relationship. Natsu is usually depicted as a bold and passionate character, while Erza is strong - willed. Their relationship might start from comradeship within the guild. Some fanfictions may explore how they gradually develop deeper feelings for each other, like through shared adventures and facing challenges together. This can lead to a mutual understanding and respect that could potentially turn into a romantic relationship.
It could also show the complexity of their relationship. Maybe Erza's actions are out of her own insecurities or fears, and Natsu getting hurt is a consequence of her not being able to handle those emotions properly. This would mean that their relationship is not just about friendship or comradeship, but also about understanding each other's inner turmoil.
There's also a possibility that it causes a rift in the guild. Other members might take sides. Some might side with Erza, believing she had a good reason, while others might side with Natsu, feeling that Erza was too harsh. This could create a lot of tension within the Fairy Tail guild and further complicate the relationship between Erza and Natsu.
In Natsu x Erza fanfic, their relationship can be full of adventure - based camaraderie. Natsu is often depicted as the impulsive and powerful mage, while Erza is the strong - willed and disciplined one. They might team up frequently, with Natsu's spontaneity contrasting Erza's calculated moves. This can lead to interesting character dynamics, where they both learn from each other and grow together in their fictional adventures.
Happy, Natsu's flying cat companion, is a must - include. Happy could be really excited about the new baby and constantly bring little things he thinks the baby would like, like small fish or soft feathers. Wendy would also be a great character to involve. As a healer, she could be checking on Erza and the baby's health regularly, and she might also share her own knowledge of magic that could be related to the pregnancy in some way.
Yes, there are many out there. You can check out fanfiction.net. There are some really well - written ones that explore different scenarios of Natsu and Erza sharing a kiss. Some might be set in alternate universes, like a modern - day setting where they are normal people instead of mages, which makes for a really interesting read.