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.
Well, it could be that Luffy tries to recruit Whitebeard into his crew. Luffy is always on the lookout for strong allies, and Whitebeard with his immense power would be a great addition. However, Whitebeard might laugh it off, seeing Luffy as a young and brash pirate with big dreams but still a lot to learn.
In this fanfiction, Luffy might initially be in awe of Whitebeard. He could be eager to learn from the great pirate. Maybe they'll team up for a short adventure against a common enemy, like a powerful marine force. Luffy's energy and Whitebeard's experience could make for an interesting dynamic.
A powerful new pirate group could be the main antagonist. They might be after the same treasure or territory as Luffy and Shanks. They could have some unique and dangerous abilities, like the ability to control sea monsters. Their leader could be a former crewmate of a well - known and feared pirate, who has his own vendetta against both Luffy and Shanks for some past reasons.
One possible plot could be that Luffy, while on a new adventure in a mysterious island, accidentally discovers a hidden treasure map that leads to a place Shanks has been looking for. Luffy decides to find Shanks and share the map. When they meet, they team up to face the various pirates and obstacles in their way to reach the treasure. Along the way, Shanks teaches Luffy some new combat skills and they strengthen their bond as friends and pirates.
In this fanfiction, perhaps Luffy has become much stronger. He might show Shanks his new skills and powers. They could also talk about their adventures since they last met, like Luffy sharing his experiences on different islands.
Their relationship could develop through mutual respect. Ace respects Shanks as a powerful pirate, and Shanks respects Ace for his lineage and his own growing power. They might start as cautious acquaintances, but as they face challenges together, like battles against other pirates or dealing with natural disasters at sea, they grow closer and become friends who trust each other.
Well, perhaps there will be some epic battles. Luffy's crew, the Straw Hats, could face off against some of the Whitebeard Pirates in a friendly spar. Luffy might use his Gear Second or Gear Third to show off his power, while the Whitebeard Pirates display their own unique combat skills. And in the end, they could gain a mutual respect for each other.
Well, in a fanfiction where Fem Luffy meets Whitebeard, there could be a lot of interesting scenarios. Maybe Fem Luffy would be in awe of Whitebeard's power and leadership. She might try to convince him to join her crew or form an alliance. Whitebeard, on the other hand, could see her potential and offer to train her.
In this fanfiction, Luffy might be initially in awe of Whitebeard's presence. He could challenge one of the crew members to a friendly spar, like Ace perhaps. And they might share stories about their adventures at sea.