Can you recommend some good 'One Piece Luffy brother OC fanfic' stories?

One common theme is family. Since it's about Luffy's brother OC, family bonds are often explored. The OC may have a different upbringing but still shares a deep connection with Luffy. Another theme is loyalty. The OC usually ends up being loyal to Luffy and his crew, just like the other Straw Hats.

In a One Piece fanfic, an OC (Original Character) as Luffy's rival could be really interesting. This OC might have a unique Devil Fruit ability that directly opposes Luffy's powers. For example, if Luffy has the Gum - Gum Fruit which gives him stretchy abilities, the rival could have a hardening or shrinking ability. This would create intense battles between them as they fight for different ideals on the Grand Line.

I've heard of a fanfic that focuses on a time when Luffy was a child and Dragon had to make a difficult choice regarding his son. It delves deep into their relationship, showing how Dragon's revolutionary ideals affected his family life. It gives a lot of backstory and really makes you think about their connection.

There's also 'Luffy and Vivi: Reunion'. This fanfic focuses on what happens when Vivi reunites with the Straw Hat crew after a long time. It beautifully captures the emotions and the unbreakable friendship between Luffy and Vivi, with some really exciting action scenes in between.

There's also 'Zoro and Luffy: Unbreakable'. In this fanfic, it focuses on their shared dreams and how they push each other forward. It has some really exciting action scenes that are in line with the spirit of One Piece. And the characterizations of Zoro and Luffy are very accurate.

One interesting plot idea could be the OC brother having a unique power that contrasts with Luffy's. For example, while Luffy has his rubber powers, the brother could have the ability to control metal. This would lead to interesting interactions within the Straw Hat crew, like helping Usopp upgrade his weapons. Another idea is that the OC brother has a different view on the One Piece treasure. He might be more interested in the historical aspect of it rather than the wealth or power it represents. This could cause some internal debates within the crew as they journey towards the Grand Line.

In a One Piece fanfic, an OC can be a worthy rival to Luffy if they have a strong and unique personality. Luffy is carefree, loyal, and always positive. The OC could be the opposite, like being cold, calculating, and self - centered. Their clashing personalities would not only create interesting interactions but also drive the rivalry forward as they compete in the pirate world.

The OC brother could fit in as a strategist. Luffy is more of an action - first kind of leader, so having a brother who can think several steps ahead in battles and planning voyages would balance the crew's decision - making. For example, in dealing with the Navy's traps, the brother could analyze the situation and come up with a smart escape plan.

Sure. You can try looking on fanfiction.net. There are often some well - written One Piece fanfics involving original characters related to Hina. Just search for 'One Piece Hina OC' in the search bar, and you'll likely find a bunch of interesting ones.

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.