Luffy would probably still value his friends above all else. However, as a Celestial Dragon, he might have more power at his disposal. This could make him a bit more confident in his actions, but also more responsible. He might feel the need to use his influence to protect not just his crew, but also the oppressed people he meets, in a more official way.
Well, one possible plot could be that Luffy starts off as a Celestial Dragon but then has a change of heart due to seeing the cruelty and inequality in the world. He might use his privileged position to start making changes from within the Celestial Dragon system.
One main theme is justice. Luffy is known for his strong sense of justice, and when dealing with the Celestial Dragons who are often portrayed as unjust, this theme is highlighted. For example, he might fight against their unfair treatment of others.
There's a fanfic called 'Luffy and the Celestial Dragon's Secret Alliance'. In this story, Luffy forms an unexpected alliance with a Celestial Dragon who has different ideals. It's full of action and character development. The writer does a great job of showing how Luffy's values can influence those around him, even a Celestial Dragon. The story also delves into the politics and power dynamics within the One Piece world, making it a really engaging read.
One possible plot could be Luffy using his newfound Celestial Dragon status to infiltrate the highest echelons of the World Government. He could pretend to be on their side while secretly working to expose their corruption and free the oppressed. For example, he might gain access to classified information about the Void Century and use it to change the world view.
Well, one possibility could be that Luffy's mother was a celestial dragon who rebelled against their cruel ways. She might have fallen in love with Luffy's father during her journey of self - discovery away from the celestial dragon lifestyle. And then she had to protect Luffy from the wrath of the other celestial dragons as he grew up with his dreams of freedom.
Well, if Luffy punches a Celestial Dragon in fanfiction, it could be a turning point in the story. Maybe it would inspire other oppressed people to rise up against the Celestial Dragons' tyranny. The Straw Hat crew might have to go into hiding for a while, but they would also become symbols of hope. And Luffy would be even more of a hero in the eyes of those who hate the Celestial Dragons.
If Luffy kills a Celestial Dragon in fanfiction, it would likely cause a huge uproar in the One Piece world. The World Government would surely hunt him down with even more intensity. His bounty would skyrocket, and his friends and crew might be in more danger than ever as they would be associated with him.
Luffy's relationship with the other Celestial Dragons would be complex. Some might try to manipulate him since he has a different mindset, while others would see him as a threat. And his relationship with the revolutionary army would also change. They might initially view him as an enemy but then realize he could be an ally in bringing down the unjust Celestial Dragon regime from the inside.
One popular 'celestial dragon luffy fanfic' could be 'Luffy's Encounter with the Celestial Dragons'. In this fanfic, Luffy might have some unique interactions with the powerful and often despised Celestial Dragons. It could show his unwavering sense of justice as he faces off against their tyranny.