They could have heart - to - heart conversations. For example, Shanks could share his past adventures and the lessons he learned from them with Luffy. This would help Luffy gain more wisdom and also deepen their connection.
One common theme could be the deep bond of friendship between them. Even in non - inappropriate fanfictions, their relationship is often a central focus. For example, how Shanks' sacrifice of his arm to save Luffy led to Luffy's unwavering determination to become a great pirate like him.
One idea could be an OC who is a long - lost relative of Shanks. Maybe they were separated when they were young and the OC has been on a journey to find Shanks. Another could be an OC who is a skilled swordsman and challenges Shanks to a duel, which then turns into an unexpected friendship. Or an OC who is a singer in a bar that Shanks often visits and they share stories and adventures through music.
Well, one interesting plot for a Shanks fanfiction could be that Shanks loses his arm in a completely different way than in the original story. Maybe he sacrifices it to save an entire island from a natural disaster rather than from a sea monster to protect Luffy. Then, the island's people, in gratitude, offer him a powerful ancient weapon that was hidden on their land. This weapon attracts the attention of all the big players in the One Piece world, and Shanks has to fend off attacks from various pirate crews and even the World Government. This could lead to a series of epic battles and strategic maneuvers as Shanks tries to keep the weapon out of the wrong hands and also deal with the new - found fame and danger that comes with it.
Well, it might involve Shanks sharing some valuable wisdom or revealing some secrets about the past. There could also be exciting battles or adventures as they face new challenges together.
One idea could be that they team up to face a new, extremely powerful enemy that threatens the balance of the New World. This enemy could be a former Rocks Pirate member who was in hiding and now has a plan to take over. Shanks and Mihawk, despite their differences, realize they need to combine their skills.
I'm not really into lemon fanfictions as they often deviate from the original spirit of 'One Piece'. However, if you want to find some well - written fanfictions about Luffy and Shanks' relationship in general, you can check out some popular fanfiction websites like Archive of Our Own. There might be some great stories that focus on their bond, like how Shanks influenced Luffy's journey to become the Pirate King.
One idea could be that Shanks teaches Luffy a special, secret Haki technique that only they share. This would give Luffy an edge in his future battles and also strengthen their bond.
When Luffy meets Shanks again in the fanfiction, it might change the story in several ways. For one, Luffy could get new directions or insights from Shanks. This could lead the Straw Hat crew to a new island or a new adventure. Also, Luffy's crew might gain new allies through Shanks' connections. And Luffy's resolve to become the Pirate King could be strengthened even more, which would drive the story forward with more determination.