Well, it could be that Lucy starts by being more physically affectionate towards Natsu. She might initiate hugs more often or hold his hand in a more lingering way. In the fanfiction, she could also use her celestial magic in unique ways to create romantic scenarios. For instance, she could summon a constellation that represents their relationship or create a starry sky for them to enjoy a private moment. And she may start cooking Natsu's favorite foods more often as a way to seduce him through his stomach.
One possible plotline could be that Lucy uses her charm and intelligence to plan elaborate schemes to get Natsu's attention. For example, she might invite him on special adventures that are just for the two of them, where she can show off her skills and bond with him more deeply. Another could be that she gives Natsu special gifts that are meaningful to him, like a scarf she made herself which has some magical protection. Or perhaps she starts dressing in a way that she knows Natsu will find appealing, not in a vulgar way but in a way that highlights her beauty and confidence.
A plotline might involve Lucy learning more about Natsu's past and using that knowledge to create a deeper connection. She could find out about his childhood dreams and then try to make them come true in some small way. For example, if Natsu always wanted to see a certain rare dragon, Lucy could use her connections and research skills to try and find a lead on it. Alongside this, she could be more flirtatious in her conversations with Natsu, using double - entendres and teasing remarks to get his attention.
A lot of fanfictions focus on the idea of Natsu and Lucy being forced to work together in a tournament. They have to overcome their differences and use their combined skills to win. This often leads to a better understanding of each other. There are also plotlines where Lucy discovers a new and powerful form of her celestial magic and Natsu helps her master it. Sometimes, a prophecy about their combined destiny is revealed, which sets them on a journey to fulfill it.
The main characters are clearly Lucy and Natsu. Lucy is a celestial wizard in the Fairy Tail guild, known for her kind heart and determination. Natsu is a dragon slayer, hot - headed and powerful. In this fanfiction, their relationship is the focus, with Lucy taking the initiative to get closer to Natsu in a seductive way.
It could be that Lucy leaves Fairy Tail because of a personal quest she has to undertake. This quest might be related to her family or her past, and she feels that she has to do it alone without the support or interference of the guild. She may plan to return once she has completed this important task.
Perhaps Natsu is under the influence of a powerful and dark magic that makes him lose control of himself and accidentally hurt Lucy. It could also be that Natsu is trying to protect Lucy from something but his actions end up causing her harm instead. Like if he tries to keep her away from a dangerous situation by pushing her too hard and she gets injured.
One possible plotline could be Natsu trying to prove his innocence. Maybe he was wrongly accused of a serious crime within the Fairy Tail guild, like endangering the lives of other guild members during a mission. He then sets out on a journey to find evidence that clears his name while also facing various challenges and enemies along the way.
It could also be a story about Natsu's personal growth during his exile. Without the support of his Fairy Tail friends initially, he has to rely on his own strength and wits. He might discover new magical abilities or face challenges that test his character, and in the end, he either returns to Fairy Tail as a changed and stronger wizard or decides that his new path outside the guild is better for him.
Perhaps they leave because they feel underappreciated in Fairy Tail. They might think that their skills and contributions are not being recognized enough, so they decide to go off on their own to prove their worth elsewhere. They could start their own small guild or join another existing one that values them more.
Maybe Natsu gets injured during a really tough battle and as a result, he forgets everything about Fairy Tail. The story could then revolve around how the guild members try to jog his memory. They might take him to all the important places in the guild, introduce him to his closest friends again, and even try to recreate some of the battles he once fought in, hoping that something will trigger his memory to come back.
One possible plotline could be that the other Fairy Tail members set up a series of pranks on Natsu, like replacing his fire - based spells with something silly, like making his hands shoot out confetti instead of flames. Another could be that they constantly make jokes about his fear of transportation, especially his motion sickness on vehicles.
One possible reason could be to seek new adventures. They might feel they've reached a point in Fairy Tail where they've done all they can and want to explore new magic and challenges elsewhere. For example, they could have heard of a far - off land with a different type of magic that they are eager to learn about.