One possible plotline could be them planning a big wedding that involves all their friends from the guild. They might face some challenges like where to hold it and who to invite. Another could be Natsu getting cold feet at first because he's worried about how life will change after marriage, but Lucy reassures him.
In the fanfiction, their relationship might have developed over many adventures. They could have realized their love for each other during a particularly dangerous mission. Natsu, always protective of Lucy, and Lucy, always believing in Natsu. Their marriage would symbolize the deep bond they share. It might also be a way to bring the guild closer together, as everyone is so happy for them. And perhaps, in this fanfiction, they would start a new chapter in their lives, thinking about having a family in the future.
Well, one possible plot could be that after many adventures together, Natsu finally realizes his deep love for Lucy. He might plan a big, romantic proposal during one of their guild parties. Then the wedding could be a grand affair with all their Fairy Tail friends in attendance. They could exchange heartfelt vows, and the whole guild could celebrate their union with lots of food, music and magic.
One interesting plotline could be Lucy and Natsu going on a quest to find a lost dragon egg. Along the way, they face many challenges and their bond grows stronger. Another could be Natsu suddenly losing his dragon powers and Lucy having to find a way to get them back, which involves delving into some ancient magic lore.
A plotline could be that Natsu and Lucy are chosen to represent their guild in a diplomatic mission to another guild. They have to negotiate a peace treaty. Natsu's straightforwardness and Lucy's diplomatic skills play important roles in this mission, and they learn a lot about each other's personalities outside of combat situations.
One common plotline could be how they handle their daily lives together while still being part of their guild. Maybe they have to balance their relationship with their duties as mages.
Gray would make a great best man for Natsu. They have a long - standing rivalry but also a deep friendship. For Lucy, Erza would be an excellent maid of honor. Erza is strong, reliable and has been like an older sister to Lucy in the guild.
One aspect of their married life in fanfiction could be the domestic side. Lucy might try to get Natsu to be more organized at home, while Natsu would bring his energetic and fun - loving nature into their household. They would probably have a lot of cute and comical moments, like when Natsu accidentally burns the dinner and Lucy just shakes her head and laughs it off. Their love would continue to grow as they share these everyday experiences.
One possible plotline could be Natsu and Lucy getting paired up for a school project. As they work together, they start to discover new things about each other and their relationship deepens. For example, they might find out they both have a secret love for a certain type of music. Another could be that there's a school competition, and they have to rely on each other's strengths to win, which brings them closer. And there could also be a plotline where they face some sort of misunderstanding among their friends, but they work through it together.
The dynamic between them as a married couple could be really interesting. For example, Natsu might become even more protective of Lucy, and Lucy could be the one to keep Natsu in line. They could go on new adventures as a married couple, facing challenges together in a different way than before.
There's a fanfic titled 'Married Life in Magnolia' which focuses on their day - to - day married life. It includes Natsu being his usual goofy self and Lucy trying to keep him in line while they both deal with the challenges of being a married couple in the Fairy Tail guild.