What are some interesting ideas for a Fairy Tail Nalu wedding fanfiction?

One idea could be that the Nalu twins have special powers that are a combination of Natsu and Lucy's magic. For example, they can use fire magic like Natsu but also summon celestial spirits like Lucy. Another idea is that they get into adventures in the Fairy Tail guild, following in their parents' footsteps and facing challenges that test their friendship and their abilities.

A cool concept would be a double wedding in the fanfiction. Maybe Levy and Gajeel along with Mirajane and Laxus getting married at the same time. The guild would be split into two teams to help with the preparations. There would be a lot of friendly competition between the two groups to make their respective weddings the best, with lots of magical touches added by the mages of Fairy Tail.

One interesting plot idea could be that in the genderbend world, Natsu as a girl is trying to prove herself in the Fairy Tail guild which is still male - dominated in terms of leadership. She wants to break the glass ceiling and show that she can be as strong as any male wizard. Another could be that Lucy as a boy has a different approach to celestial magic. Maybe he is more brash and uses the keys in a more combat - oriented way rather than the more diplomatic or emotional way Lucy does. And a third idea is that their relationship dynamics change completely. The girl Natsu might be more shy about her feelings towards boy Lucy, which is a complete reversal of their normal dynamic.

Well, perhaps in this office fanfiction, the office is actually a front for a secret magical organization. Natsu and Lucy are brought in not knowing the real nature of the place. As they start to uncover the truth, they find themselves in the middle of a power struggle between different factions within the organization. Their relationship grows as they rely on each other to survive and expose the corruption within the organization.

One idea could be the children of Natsu and Lucy having to deal with a new dark guild that has emerged. They inherit their parents' powers but also have to figure out how to use them in new ways to combat this threat.

One idea could be that during a Truth or Dare game at the guild, Natsu is dared to confess his true feelings for Lucy. This could lead to a whole new level of their relationship development.

Perhaps the future child is born with a special mission. In the fanfiction, it could be that the child has to reunite different factions of the Fairy Tail guild that have split apart in the future. This would involve the child using their knowledge of their parents' friendship and the power of Fairy Tail's bonds. Also, the future child might face an enemy that is related to an old foe of Fairy Tail, and they need to draw on their family's legacy to defeat it.

One idea could be that Natsu and Lucy discover they have a long - lost family connection that makes them siblings. They then have to deal with the new dynamic while still being part of the Fairy Tail guild. For example, Natsu might become overly protective in a different way than before.

One idea could be that Natsu and Lucy are transported to a world similar to that of Black Bird, where they have to face new and strange magic. They might encounter characters from Black Bird who mistake them for enemies at first. Another plot could involve a powerful dark magic that is affecting both the Fairy Tail world and the Black Bird world, and Natsu and Lucy, with their unique bond, have to find a way to stop it.

One idea could be that Natsu accidentally uses a new spell that creates an intense heat wave around him and Lucy has to find a way to cool him down while also dealing with the chaos it causes in the guild. Another could be a forced heat - related spell that makes Natsu and Lucy work together more closely than ever to defeat an enemy who is using cold - based attacks.