Well, a plot could revolve around a competition in the Fairy Tail guild where Millianna and Natsu are teamed up. At first, they don't get along well because of their different personalities. Millianna is more sly and Natsu is brash. But as they face challenges in the competition, they start to understand each other better. Maybe there's a task where they have to rescue a group of kittens, which plays to Millianna's love for cats. Natsu, on the other hand, has to use his strength to fight off the bad guys who are trying to stop them. In the end, they become closer friends and realize they make a great team.
One popular plotline could be Millianna and Natsu teaming up for a difficult mission. Maybe they have to infiltrate an enemy stronghold. Millianna's cat - like abilities and Natsu's fire power would make for an interesting combination. They could face challenges that require both stealth and brute force.
One plot idea could be that Natsu and Juvia are on a mission together in a mysterious, ice - covered land. Juvia's water magic is affected by the extreme cold, and Natsu has to use his fire magic to keep her safe while they search for a powerful, lost artifact. Along the way, they start to understand each other better and develop a deeper bond.
One plot idea could be that Juvia and Natsu are forced to team up on a mission in a dangerous, enchanted forest. Along the way, Juvia's feelings for Gray start to shift towards Natsu as she sees his determination and kindness in a new light. Another could be a body - swap situation where Juvia and Natsu swap bodies and have to learn to deal with each other's powers and personalities, leading to some comical and heartwarming moments. A third idea is that in an alternate universe, Juvia and Natsu are childhood friends, and they have to face the challenges of growing up and protecting their world together, with their relationship evolving from friendship to something more romantic.
The OC could be a time - traveler who ends up in the Fairy Tail world. She meets Natsu and tries to hide her true identity. But Natsu, being perceptive, notices something odd. They start to team up for various missions, and the OC has to use her knowledge of future events to help Natsu and Fairy Tail, all the while falling for Natsu's brash but kind personality.
A plot could involve Fem Natsu accidentally using her magic in a way that affects Laxus in an unexpected manner. For example, her fire magic could trigger some latent power in Laxus, and as they figure out what's going on, they become closer. This could also lead to some interesting training sessions between them as they try to control this newfound power connection.
Their relationship could start with simple friendship. Natsu might accidentally save Millianna from a small accident in the guild, like when she trips over something and he catches her. This could lead to them chatting more often. Then, as they go on missions together, they learn about each other's strengths and weaknesses. Millianna could start to admire Natsu's courage, and Natsu could be intrigued by Millianna's unique magic. Over time, this could develop into a deeper bond, like a romantic relationship where they are more protective of each other and share their innermost thoughts.
One idea could be a mission where Natsu and Laki are paired up by accident. Laki, being more of a support - type mage with her wood - based magic, could initially be intimidated by Natsu's brash and powerful fire magic. But as they face challenges together, she learns to stand up to him and they develop a mutual respect. For example, they might encounter a powerful earth - based monster that is immune to Natsu's fire. Laki's ability to manipulate the surrounding trees to entangle the monster gives Natsu the chance to figure out a new strategy to defeat it.
One idea could be that Natsu is exiled due to a false accusation of using dark magic. He then has to journey alone to prove his innocence, encountering new friends and foes along the way. Maybe he discovers a new form of magic during his exile.
One idea could be Natsu going on a solo mission to a far - off land that has a different type of magic entirely. He has to learn to adapt and control this new magic to complete his task. Another could be Natsu training a new generation of Fairy Tail wizards, passing on his unique brand of magic and combat skills.
One idea could be that Mystogan and Natsu have to team up to face a powerful dark wizard. Since Mystogan is usually more reserved and Natsu is hot - headed, their clashing personalities could lead to some humorous and intense moments during the fight.