Perhaps Akainu gets involved in a plot to destroy the Pirate King's legacy, which Luffy is determined to uphold. This leads to a series of battles across different islands. Luffy gathers allies along the way, and through a combination of strategy and brute force, he manages to overpower Akainu in a final showdown. In this fanfiction, Luffy might also have to overcome some internal struggles related to his own beliefs about killing.
One possible plot could be that Akainu attacks the Straw Hat's new island, endangering Luffy's friends. Luffy, filled with rage, challenges Akainu. After an intense battle, Luffy discovers a new form of his Gear ability that allows him to withstand Akainu's magma and finally defeat him.
Considering Luffy's character development, he has always been against those who harm his friends and the innocent. Akainu has caused great harm, especially during the Marineford War. If Luffy continues to grow in strength, and if the story progresses in a way that pits them against each other again, there's a chance. But the Marines also have their own ways of protecting their top - ranked officers, so it's a complex situation.
Well, it could be about Naruto having to deal with the strict and fiery nature of Akainu as his father. Maybe Naruto has to adapt to a more military - style upbringing while still holding onto his own ninja values.
Well, it could be that Luffy gets kidnapped because of some secret he holds. Maybe there's a group that wants to find out the location of One Piece through Luffy, and they think kidnapping him is the best way. His friends then have to search for clues and race against time to save him before he's forced to reveal the information.
After Luffy kills a Celestial Dragon in fanfiction, the story might see the emergence of new allies for the Straw Hat Pirates. There are likely many characters in the One Piece world who secretly despise the Celestial Dragons and would be inspired by Luffy's bold move. These new allies could bring new skills and resources to the crew. Also, the World Government might start to show its cracks as internal disputes could arise over how to handle Luffy. Some might want to go all - out to destroy him, while others might see the potential for a change in the current power structure.
In such a fanfiction, perhaps Kawaki is driven by some extreme ideology. Maybe he believes Naruto's way of peace is a weakness and decides to take him out to change the ninja world in a more radical way.
Well, it could start with Athena making a decision that Percy believes will lead to the destruction of Camp Half - Blood and all the demigods. Maybe she's under the influence of an ancient evil. Percy tries to reason with her, but she won't listen. So, he has to consider killing her to protect his friends and home. Along the way, he faces opposition from other demigods who still believe in Athena's goodness. Percy then has to find a way to prove that Athena is a threat, all while dealing with his own feelings of guilt and betrayal for even thinking about killing a goddess he once respected. It would be a story filled with drama, action, and moral quandaries.
Maybe the plot involves a mission where Naruto is sent to a realm that has been invaded by goblins. The goblins have a powerful magic item that they are using to gain an upper hand. Naruto has to fight his way through hordes of goblins, using his various jutsus like the fireball jutsu to clear paths. Along the way, he discovers the goblins' weakness and finally manages to kill the main goblin force, saving the day in this strange new world.
In a 'Naruto kills Gato' fanfiction, the plot could start with Gato's continued oppression in the Land of Waves. Naruto, having witnessed the suffering of the villagers, decides he's had enough. He uses his Shadow Clone Jutsu to surround Gato and his men. With a swift combination of Rasengan and his ninja skills, he takes Gato by surprise and defeats him, thus liberating the Land of Waves in a more direct and violent way compared to the original story.
One possibility could be that Harry is under some dark magic influence. Maybe he's been corrupted by a powerful and evil spell or artifact that makes him lose his sense of right and wrong, leading him to turn on everyone. Another aspect could be that he's been betrayed so deeply by those he trusted that he snaps and decides to take revenge on everyone, believing they are all against him.
In the 'kushina kills naruto fanfiction', perhaps there's a misunderstanding that leads to this extreme situation. For example, Naruto could be framed for something really bad, and Kushina, believing the false information, takes drastic action. It's a really twisted concept compared to the original story where family is so important.