Well, it could be about Naruto somehow ending up in the Fairy Tail world and meeting Natsu. Maybe they team up to fight a common enemy. Naruto's jutsus and Natsu's dragon slayer magic could combine in interesting ways during battles.
One possible plot could be that Naruto, through some magical or time - traveling event, ends up in the world of Natsu. He then becomes an important figure in Natsu's family, eventually becoming his grandfather. He could pass on his ninja skills and values to Natsu, which would make Natsu a more powerful and wise mage.
In this fanfiction, it could start with Naruto feeling a strange connection to Natsu. As they meet, they discover their shared blood relation. Then, they embark on a journey to find out more about their family's past. Along the way, they encounter various challenges like facing off against enemies who are after their unique powers. They rely on each other's strengths, Naruto's strategic thinking and Natsu's brute force and magic, to survive and grow closer as brothers.
The plot could involve them discovering their brotherhood. Maybe they start off in different worlds and then some magical or mysterious event brings them together. They then realize they are brothers and start to explore their combined powers to fight against a common enemy.
One possible plot could be that Natsu and Naruto, as brothers, grow up in a world where magic and ninjutsu co - exist. They start off training together, with Natsu teaching Naruto some basic fire - based magic and Naruto showing Natsu his ninja skills like tree climbing. As they grow older, they face a common enemy that threatens both their worlds. They combine their powers, Natsu's brute strength and fire magic with Naruto's strategic ninjutsu and shadow clones, to defeat the enemy and save their loved ones.
In a 'naruto meets natsu fanfiction', they might start off as rivals. Naruto, with his ninja skills and determination, and Natsu, with his dragon - slayer strength. But as they get to know each other better, they realize they have a lot in common. For example, they both have a strong sense of loyalty to their friends. So they end up becoming good friends and combining their powers to protect their respective worlds from threats that could endanger both.
The plot might involve Natsu being lured into a trap by a false Dragonoid. Since he has a strong connection with dragons, the false Dragonoid could trick him into a place where he's trapped. He would then need to figure out how to escape and expose the false Dragonoid for what it really is.
One possible plot could be that they discover the pregnancy and then face challenges together. Maybe they have to deal with the reactions of their friends in the guild, some being happy and supportive while others might be worried about how it will affect their adventuring lives.
The plot might involve Natsu and Mirajane finding a baby dragon in the form of a human baby. Since Natsu has a connection with dragons, he feels a special bond. Mirajane, with her kind heart, steps in to help raise it. They face challenges like protecting the baby from dark guilds who might want to use the baby's power.
One plot idea could be that Natsu has to deal with the physical and emotional changes of pregnancy while still trying to be part of his usual adventures. Maybe his friends are super protective of him now.
Well, perhaps Natsu could be turned into a vampire during a battle with a powerful dark magic user. Then he'd struggle with his newfound vampiric instincts, like the urge to drink blood, while still trying to be true to his friends and his guild.