Their relationship could start with Uta being initially distrustful of Luffy. After all, Luffy is a pirate and Uta has her own ideas about pirates. But as she sees Luffy's pure heart and his determination to protect his friends and pursue his dreams, she starts to warm up to him. They might then become friends who share their different stories and experiences.
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.
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.
A different fanfiction could be set in a post - war scenario. Luffy has achieved his goal of making the world a freer place, and Uta, with her music, is now using her influence to bring joy and peace to the people. They team up to hold a grand concert on an island that was once ravaged by war, and their combined efforts help the island to revive and thrive.
Fanfiction.net is also a great place to find luffy and uta fanfiction. There are many talented writers who post their works there. However, the website's interface might be a bit old - fashioned compared to AO3. But it still has a good amount of content related to different anime and manga pairings, including luffy and uta.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - made stories, and you're likely to find some great 'uta x luffy fanfic' there.
Some 'uta x luffy fanfic' could explore a scenario where Uta joins the Straw Hat crew. This would bring a new dynamic as her musical powers and her connection to Luffy would add interesting plotlines. For example, she could use her music to enhance the crew's morale during tough battles.
There could be a luffy x uta fanfic where they meet in a different timeline. Uta's singing might have a special effect on Luffy, giving him new powers or a different perspective on his goals. This would lead to an interesting exploration of their relationship and how it affects the world around them.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, including One Piece, so there's a good chance you'll find some luffy x uta fanfic there.
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.