Growth is a very common theme. Since Coby starts as a relatively weak character, many fanfictions focus on his journey to become stronger, both physically and mentally.
A luffy x nami x robin fanfic often explores the complex relationships among these three characters from 'One Piece'. It could show their different interactions, like Luffy's carefree nature affecting Nami and Robin in unique ways. Maybe it delves into how they support each other during their adventures on the Grand Line. For example, Luffy's determination might inspire Nami and Robin to be braver in the face of danger.
One possible theme could be friendship. Coby Morgan might form strong bonds with other characters at the academy. Another theme could be self - discovery. As he goes through his experiences at the academy, he may learn more about himself.
There is a fanfiction titled 'Admiral Coby and the New Era'. It's really interesting as it shows Coby in a future where he has to deal with new threats to the world. It delves into his strategic thinking and how he uses his influence to keep the peace. The author does a great job of portraying Coby's character development.
There's a fanfic called 'Sabo, Luffy and Ace: Unbreakable'. In this fanfic, it explores their past, present and future. It shows how their shared experiences have shaped them. It also has some interesting plot twists that keep you hooked from start to finish.
I would recommend 'Three Souls, One Dream'. It has an interesting take on their interactions, showing how Zoro, Luffy, and Sanji grow together as a team. It has some really heartwarming moments that capture the essence of their friendship.
I would recommend 'Ace, Luffy and Sabo: Reunion of Souls'. This fanfiction is full of heart - warming moments. It shows how their past experiences shape their present interactions and how they support each other in the face of difficulties.
A 'luffy x nami depressed fanfiction' could be centered around Nami's past traumas resurfacing and Luffy trying to help her but feeling helpless. For example, her experiences with Arlong might come back to haunt her, and she could fall into a state of depression. Luffy, being the captain, would be determined to pull her out of it, but his simple - mindedness might at first make it difficult for him to fully understand her emotional turmoil.
One great 'nami x luffy fanfiction' is 'The Bond Beyond the Map'. It beautifully portrays their relationship development. It shows how Nami's intelligence and Luffy's determination work together in new and exciting adventures.