Another theme is self - discovery. Through their relationship, both Sanji and Pudding often learn more about themselves. For example, Sanji may discover new depths to his emotions, and Pudding might find a new sense of purpose outside of her family's expectations.
One popular Sanji x Pudding fanfic is 'A Sweet Encounter'. It beautifully portrays their relationship with vivid descriptions of their interactions. The story shows how Sanji's charm and Pudding's complex personality come together in an interesting way.
Yes. The conflicts between Sanji and Luffy in the manga often stem from complex circumstances and character developments that drive the narrative forward.
As of now, Sanji is very much alive in the One Piece manga. The story keeps unfolding with him as a vital part of the plot. The author hasn't written his death yet.
Well, it could start with Naruto somehow coming across the world of One Piece. And he's immediately drawn to Sanji because of his cool fighting style and amazing cooking. Naruto might start following Sanji around, asking him to teach him how to cook some of his delicious dishes. And Sanji, being the chivalrous guy he is, might take Naruto under his wing.