Well, they might become even closer to the other guild members. After surviving such a harrowing experience, the other members could look at Natsu and Erza with newfound respect. Natsu might be seen as even more of a hero, and Erza as an even stronger protector. This could lead to stronger bonds within the guild, with the other members relying on them more in tough situations.
A possible plot twist is that they survive but are transported back in time on Tenrou Island. They have to relive certain events, but this time with the knowledge they already have. This could lead to them changing the past in unexpected ways, like preventing some of the tragedies that originally occurred on the island, which would then have a huge impact on the future of the Fairy Tail guild.
Well, it could be about Natsu being left behind in Tenrou. Maybe it's a story where his friends accidentally leave him there during some sort of event or mission. It might explore his feelings of isolation and how he tries to find his way back to them.
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.
Obviously, Natsu would be a main character since he's the one left behind. There could also be other characters from the original series who are relevant to the story, like his friends who left him, such as Lucy, Gray, and Erza. Maybe some local characters in Tenrou could also play important roles in the fanfiction.
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.