Obviously, Laxus is the central character. He is a powerful mage in the Fairy Tail guild. His character is often explored in terms of his growth, his relationships with other guild members like Natsu and Erza.
One great Lucy x Laxus fanfiction is 'A New Bond'. It focuses on how they start to rely on each other during a difficult mission. Their interactions are really well - written, with Lucy's kind heart slowly melting Laxus's tough exterior.
One great Fairy Tail Laxus fanfiction is 'Laxus' Redemption'. It delves into his journey of making up for his past mistakes and growing as a character. The story beautifully portrays his relationships within the guild.
A strong plot is also essential. It could be a story about them going on an adventure together, or dealing with a threat to the guild that brings them closer. The plot should not feel forced, but rather flow naturally as their relationship evolves. For instance, a plot where they have to team up to defeat a powerful enemy can create great opportunities for their relationship to grow.
One exciting moment could be when Natsu first unleashes his most powerful Fire Dragon Slayer attack against Laxus. The sheer power of the flames and the look of determination on Natsu's face would be thrilling. Another moment might be when Laxus counters with his Lightning Dragon Slayer magic, creating a spectacular display of light and energy as the two elements collide.
In my opinion, Natsu would have a good chance of winning. Natsu is known for his incredible determination and his ability to keep getting back up no matter how tough the fight. His Dragon Slayer magic gives him great power and his Fire Dragon's Roar can deal significant damage. Also, his experience in various battles has toughened him up. However, Laxus is no pushover either. He has his Lightning Dragon Slayer magic which is extremely powerful. But Natsu's never - say - die attitude might just tip the scales in his favor.
Perhaps she decides to go on a solo adventure to find out more about her family's past. This journey takes her to far - off lands where she meets different characters and has to overcome various challenges. When she returns to Fairy Tail, she has new knowledge and experiences that change the way she interacts with the guild and especially with Laxus.
Her character could be developed by showing her struggle with living in Laxus' shadow. She might start off as a bit timid but gradually become more confident as she finds her own place in the guild. For example, she could take on small tasks around the guild and prove her worth.
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.
One possible reason could be that he accidentally causes too much destruction during a mission. Maybe he loses control of his magic and wrecks an important place in the magical world, leading the guild to expel him as a form of punishment.