Perhaps a fanfiction where an old enemy returns to target Laxus, and Mira steps in to protect him. In the process, they are forced to hide out together. During this time of isolation, they have deep conversations about their pasts, their dreams, and slowly fall in love as they discover how much they have in common.
A plot could revolve around Mira getting injured while protecting Laxus during a guild battle. Laxus then realizes his true feelings for her as he stays by her side during her recovery. He starts to do small things like bringing her flowers and reading to her, and their relationship blossoms from there.
One idea could be a story where Mira and Laxus are paired on a difficult mission. They start off bickering as they have different approaches, but as the mission progresses, they begin to understand and respect each other more. This could lead to a budding romance as they see the good in one another.
One idea could be that Mira and Lucy team up for a really difficult S - Class quest. They face all kinds of magical creatures and obstacles along the way. Mira uses her demon form's powers in a creative way to protect Lucy, and Lucy discovers a new Celestial Spirit that helps them out.
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.
A really interesting plot would be if there was a prophecy about Freed and Laxus having to team up to save the Fairy Tail guild from an internal threat. They would have to face their own insecurities and past mistakes while trying to figure out who the traitor in the guild is. Along the way, they would strengthen their bond and prove their loyalty to Fairy Tail.
A possible plot could involve a magical tournament. Female Natsu enters to prove herself, and Laxus also participates. They end up as reluctant allies at first. As the tournament progresses, they start to see each other in a new light. Their interactions during the battles, the post - fight banter, and the times they have to train together can all be opportunities for their relationship to grow. Maybe there's a sub - plot where an old enemy of Laxus tries to use Female Natsu against him, which further complicates their relationship.
Their relationship could be developed uniquely by having them start as rivals in a magical competition within the guild. As they compete, they learn about each other's strengths and weaknesses, and a mutual respect forms. This respect then turns into an unexpected friendship that eventually grows into love.
One plot idea could be that Mira gets caught in an embarrassing situation during a Fairy Tail event. For example, she accidentally casts a spell wrong and her clothes disappear just as an important guest arrives. Another could be that she is forced to participate in a contest where she has to show a hidden talent, but she's embarrassed about it. Maybe she has to sing in front of everyone when she thinks she's a bad singer.
There could be a 'laxus fairy tail fanfiction' where Laxus has to train a new, young member of the Fairy Tail guild. In this story, he would have to learn patience and different teaching methods as the young mage has a completely different type of magic. It would be a story about mentorship and how Laxus can adapt to new situations.
Maybe an OC who has the ability to communicate with spirits. In the 'fairy tail x oc fanfiction', this OC could discover that there are ancient and powerful spirits that are about to be awakened due to some dark magic ritual. The OC tries to enlist the help of the Fairy Tail guild to stop this from happening. Along the way, they face many challenges and also have to deal with the guild's initial skepticism about their powers and the existence of these spirits.
Another plot could involve a magic - based tournament where teams from both Fairy Tail and RWBY participate. This would allow for battles between different characters, like Natsu from Fairy Tail facing off against Yang from RWBY. The different fighting styles and power sources would make for exciting match - ups and also a chance for the characters to learn from each other.
One idea could be that the gamer's leveling system is applied to the Fairy Tail world. For example, the characters can gain XP by completing quests like in the game. They might level up their magic abilities in a more numerical way, similar to how a gamer levels up their character stats. Another plot could involve the gamer character introducing modern gaming concepts to the Fairy Tail guild, like mini - games for training or new ways to strategize during battles.