There's a fanfiction called 'Frost and Flame' which delves into how Ultear's cool nature contrasts with Natsu's fiery personality. It shows their journey of understanding each other and growing closer. The author does a wonderful job of creating a vivid world for them to interact in.
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.
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.
Another option could be Wattpad. There are many fanfiction writers on Wattpad who might have written stories about Natsu and Ultear. However, you may need to do a bit more searching as there is a large amount of content on the platform.
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.
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.
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 popular trope could be the 'enemies to lovers' trope. They could start off on opposite sides, for example, Ultear being part of a group that Natsu initially sees as a threat. But as they interact more, they realize they have more in common than they thought and feelings start to develop. Another trope could be the 'hurt/comfort' trope, where one of them gets injured or is in a difficult emotional state and the other is there to support and comfort, which then leads to a deeper connection.
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.
One popular 'natsu crossover lemon fanfiction' could be the ones where Natsu is crossed over with characters from other fantasy worlds. For example, a crossover with characters from 'The Lord of the Rings' might create interesting scenarios. The 'lemon' aspect might add some romantic or spicy elements to the story, but it should be written tastefully. However, finding really good ones depends on your personal taste in crossovers and the way the author develops the relationship between Natsu and the other characters.