One common theme could be friendship evolving into something deeper. Since Ace and Luffy have a strong bond in the original 'One Piece' story, in these fanfics, it might be explored as a more romantic or intimate relationship. Another theme could be sacrifice, as both characters are known for their selfless natures in the anime.
A common theme is also the exploration of their physical attraction. Writers might describe how they notice each other's bodies in a different way than just the normal brotherly concern. For instance, Ace might be captivated by Luffy's carefree nature and how it's reflected in his movements and expressions, which then leads to a physical attraction. This can be a starting point for a more in - depth romantic relationship in the fanfiction. There could also be themes around jealousy, like if another character shows interest in Luffy, Ace would feel jealous in a romantic way.
I'm not an expert in this particular type of fanfic. However, you could also join some 'One Piece' fan communities on social media platforms or forums. Fans there often share and discuss their favorite fanfics, including those with Ace and Luffy in a certain relationship. They might be able to point you to some great reads.
Adventure is also common. They are pirates after all. Fanfictions might take them on new quests or have them explore uncharted islands together, much like in the original series. For example, they could be searching for a hidden treasure that has a special meaning to their family. It's a way to continue the spirit of adventure that One Piece is known for in a new context.
The popularity also stems from the fact that there are so many unexplored aspects of their relationship in the official story. Fanfiction allows writers to fill in those gaps and create stories that satisfy the fans' curiosity. For example, their early days together or how they would interact in different settings.
You can start by looking on some well - known fanfiction websites such as Archive of Our Own (AO3). It has a large collection of One Piece fanfictions, and you can use the search function to specifically look for Ace x Luffy yaoi stories. There are usually tags and filters that can help you narrow down your search to find the ones that suit your taste. Another option is Fanfiction.net, which also has a good number of One Piece fan works, although the tagging system might be a bit less refined compared to AO3.
One good 'One Piece Ace x Luffy fanfiction' is 'Brothers in a New Light'. It explores their relationship in a different AU (alternate universe) where they face new challenges together. The story focuses on how their bond remains unbreakable even in the face of unexpected situations.
One great 'One Piece Luffy x Ace fanfiction' is 'Bonds Beyond Blood'. It beautifully explores their relationship in a world where they face new challenges together. The story really dives deep into their brotherly bond and how they support each other in the face of danger. It also has some really cool action scenes that are true to the spirit of One Piece.
For many fans, it's the idea of taking the deep friendship and loyalty that Zoro and Luffy have in the One Piece world and turning it into a romantic relationship. It adds a new layer of depth to their interactions. Also, the contrast between Zoro's tough - guy exterior and Luffy's more carefree nature makes for an interesting dynamic in these fanfictions. The fanfiction writers can play around with different scenarios that the original anime might not explore, like how they deal with jealousy or misunderstandings in a romantic relationship.
One popular 'luffy x ace yaoi fanfic' is 'Bond of Brothers'. It really delves deep into their relationship, showing how their bond could be interpreted in a more romantic light. The story has some great emotional moments that draw readers in.