A possible plot is that Natsu accidentally drinks a potion that makes him see Ultear in a different light. He starts to pursue her, and Ultear is initially confused but then slowly gives in. Their story could involve them dealing with the reactions of their friends in the guild and how they overcome the obstacles to their relationship.
Perhaps a plot where Ultear uses her time - related magic to go back in time and meet a younger Natsu. She initially has an ulterior motive but ends up falling for him. Their relationship develops in a series of flashbacks and present - day interactions, with a lot of emotional and some mildly romantic undertones, but without crossing into inappropriate territory.
One idea could be that Ultear and Gray are on a mission together in a mysterious land filled with magical creatures. Along the way, they discover a hidden lemon grove that has some special magical properties related to their powers.
Well, Natsu Dragneel is one of the main characters. He has his own unique powers and a very boisterous personality. Ultear Milkovich is the other main character. She has a more mysterious and somewhat troubled past. Their different personalities and backgrounds make for an interesting dynamic in the fanfic, whether it's a story of friendship, rivalry, or something more romantic.
One good story could be 'A Magical Bond' where Natsu and Ultear go on an adventure together and their relationship develops in unexpected ways. It has great character interactions.
Perhaps characters like Gray or Erza from Natsu's side could be part of the story. They might initially be shocked but then come around to support their friend. On Ultear's side, any of her former comrades or mentors could show up. They could have different reactions, some might be happy for her while others could see it as a threat to their own plans or to Ultear's future in a more negative way.
One plot idea could be that Natsu and Cana go on a special mission together. During this mission, they face various challenges that force them to rely on each other more than ever. As they overcome these difficulties, their friendship deepens and they start to realize new feelings for each other. Another idea is that in a magical accident, Natsu and Cana end up swapping powers for a while. This leads to humorous situations as they try to figure out how to use the other's abilities. They also have to work together to reverse the spell, which brings them closer.
One interesting story could be about Natsu and Ultear meeting in a magical forest. They start off as strangers but gradually find themselves drawn to each other because of their shared love for adventure. They go on quests together and along the way, they discover new things about their magic and themselves.
Well, perhaps in the fanfiction, Natsu and Ultear get married in a grand ceremony attended by all their friends from the guild. After marriage, they decide to go on adventures together. Ultear could use her time - magic to help Natsu in battles, like rewinding time a bit to give him an edge. They also start a family, with Natsu teaching their kids about the importance of friendship and Ultear teaching them magic.
I'm not sure specifically as I haven't read this particular fanfiction. However, it might involve a fictional scenario where Natsu and Ultear's relationship takes a turn towards having a family, with all the emotional and story - driven elements that come with it like how they deal with the pregnancy, how it affects their relationships with others in the story's universe.
Perhaps in this fanfiction, a magical spell goes wrong and creates a baby that has a connection to both Natsu and Ultear. They then have to deal with the consequences. Natsu might try to use his fire magic to keep the baby warm in a rather clumsy way at first. Ultear, on the other hand, uses her time - related magic to create things for the baby like a cozy crib or toys. They face challenges like getting the baby to sleep through the night and protecting it from any villains who might want to use the baby for their own evil purposes.
I'm not entirely sure as 'ultear lemon fanfic' could refer to a very specific piece of fan - created work. It might be a fanfic related to a character named Ultear, and perhaps the 'lemon' in the title could imply some sort of citrus - themed or fresh - themed aspect in the story. But without more context, it's hard to be more specific.