They could start with a big hug. Then Shanks might tease Luffy about his still - crazy appetite. Luffy, in turn, could show off his new crew members to Shanks.
They might have an epic battle to test Luffy's growth. Shanks could see how much stronger Luffy has become and be proud. Maybe Luffy will show off his new Haki abilities.
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.
In fanfiction, when Shanks meets Luffy's crew, it could be a very emotional reunion. Shanks might be impressed by how much Luffy and his crew have grown. He could see the strong bonds within the crew and be proud of Luffy for leading them so well.
Shanks and Luffy's relationship is one of mentorship and friendship. Shanks inspired Luffy to set out on his pirate adventure and gave him his straw hat as a symbol of their connection.
In the fanfiction, Luffy might show Shanks how much he has grown. He could display his new Haki abilities and his stronger crew. Shanks would be proud of Luffy's progress.
Luffy might be more confident and less like a little kid around Shanks. He has grown a lot, and Shanks would notice this. Their relationship could become more of an equal partnership in terms of respect.
One common theme is mentorship. Shanks is often portrayed as a mentor to Luffy, guiding him in his journey to become a great pirate. Another theme is the idea of a strong, unbreakable bond. Their relationship is shown as something that withstands time and distance.
One common theme is the exploration of a different backstory for Luffy. Since he's Shanks' son, his origin story and the reasons for his actions change. Another theme is the impact on his relationships. For instance, his relationship with Shanks becomes more complex, not just a mentor - protégé relationship but a father - son bond.