Another plot could involve Natsu and Mirajane's family facing a threat from a powerful dark magic user. This forces them to work together not only as a couple but also as a family unit. Their children learn important lessons about courage and the strength of family bonds during this difficult time. Their family's unique combination of magic is the key to defeating the dark magic user in the end.
One idea could be that Natsu and Mirajane start a family in a peaceful post - guild - war era. Their kids inherit unique magical abilities from both of them and they have to train and guide their children through the magical world's challenges.
Perhaps they discover a long - lost relative while building their family. This relative brings a new set of challenges and revelations about their family histories. For example, it could be related to some ancient magic that only their family line can use, and they need to figure out how to handle this new power in their family dynamic.
One plot idea could be that Natsu accidentally discovers Mirajane's secret hobby, like painting. As he tries to help her show her work, they grow closer. Another could be a mission where they get separated from the rest of the guild and have to rely on each other for survival, leading to a realization of their feelings. Or perhaps a magic - induced amnesia situation where Natsu forgets everyone but Mirajane is determined to make him remember their relationship.
One idea could be that they discover the pregnancy during a big battle. The news gives them extra motivation to protect their world and each other. They start to prepare for the baby's arrival while still dealing with the threats around them.
A plot could be that during a difficult mission, Mirajane discovers she's pregnant. Natsu then has to balance protecting her and completing the mission. This would add a layer of tension and emotion to the story.
Perhaps the OC is from a different dimension where magic works in a strange way. Natsu, Mirajane, and Erza are intrigued by this. They team up to help the OC understand and control their magic in the world they are in now. Along the way, they encounter a powerful dark wizard who wants to use the OC's unique magic for evil. So, they have to fight together to protect the OC and the world from this threat.
Maybe Mirajane is kidnapped by a dark wizard who has a vendetta against her family. In the fanfiction, the wizard could be trying to force Mirajane to reveal the secrets of her family's magic. Her Fairy Tail comrades would have to figure out where she is and how to defeat this powerful foe.
One idea could be that Mirajane and Natsu get lost in a mysterious magical realm during a mission. They have to rely on each other's skills and knowledge to find their way back. Natsu's brute strength and Mirajane's transformation abilities would be useful in different situations as they face various magical creatures and obstacles.
The plot might involve Natsu and Mirajane finding a baby dragon in the form of a human baby. Since Natsu has a connection with dragons, he feels a special bond. Mirajane, with her kind heart, steps in to help raise it. They face challenges like protecting the baby from dark guilds who might want to use the baby's power.
In 'natsu x lucy family fanfiction', an interesting plot could be that Natsu and Lucy's family discovers an ancient prophecy related to their family line. The prophecy foretells that their family will play a crucial role in saving the magical world from a great evil. As they try to understand the prophecy, they encounter various challenges. Their family might have to travel to different parts of the magical world, meet new allies and enemies. Also, the kids in the family could start to show unexpected powers as they grow up, which adds more to the family's journey in fulfilling the prophecy.
One idea could be a story where they go on a quest together. Maybe they have to find a rare magical item. Natsu's impulsiveness, Mirajane's charm, and Erza's strict leadership combine in interesting ways during the adventure.
Well, a great plot could involve them facing some challenges during the pregnancy. For instance, Mirajane might have some difficulties with her magic due to the pregnancy hormones. And Laxus would be super protective, which could lead to some interesting conflicts within the guild when he overreacts to perceived threats. Also, they could discover some old family traditions related to pregnancy and childbirth that they decide to incorporate.