It's popular because it shows a different side of their relationship. People like to see Luffy being more than just his usual carefree self and using his smarts in relation to Nami. It adds depth to their dynamic.
A possible smart luffy x nami fanfiction might involve Luffy quickly understanding a difficult enemy's strategy and then working with Nami to counter it. Luffy's instinct combined with Nami's intelligence in planning. They could come up with a plan that surprises everyone on the crew. This would show their great teamwork and how well they complement each other.
Luffy, being the main character, often develops in terms of his understanding of relationships. In a harem setting, he starts to become more aware of the feelings of Nami and the other potential harem members. He might become more sensitive and learn how to handle different emotions. For example, he could start to pick up on Nami's jealousy cues more easily.
One popular plot twist could be Luffy suddenly gaining a new power that makes him more appealing in the harem setting. Maybe he discovers a devil fruit ability that gives him charm powers. Another could be Nami getting kidnapped by a new villain, leading the harem to work together to save her. This would test their relationships and loyalty.
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.
Well, in this 'luffy x nami nightmare fanfiction', it might depict a scenario where Luffy and Nami are in a nightmare world. It could be that they have to overcome their fears. For example, Luffy might have to deal with the fear of losing his crew, and Nami could be facing her past traumas in this nightmare setting. And they would rely on each other to get out of this difficult situation. It's all speculation as fanfictions can vary greatly in their content.
Their relationship might become more of an equal partnership in terms of strategizing. Usually, Luffy is more about action, but a smart Luffy could contribute intellectually to Robin's plans, making their bond stronger as they rely on each other's skills more evenly.
Friendship is often a big theme. Since Luffy, Nami, and Robin are all part of the Straw Hat crew, their relationships are built on a foundation of friendship, and this often gets explored in a more romantic or deep - connection way in the fanfiction. Another theme could be adventure. Their adventures together in the One Piece world can be the backdrop for their relationship development.
Well, a frequent theme is the exploration of different relationships. It could be Luffy's carefree nature affecting Nami and Hancock in unique ways. Also, the theme of loyalty might come up. Since they are all important characters in their own right, stories might show how they remain loyal to each other in difficult situations. There can also be a theme of self - discovery as they interact and learn more about themselves through their relationships with the others.