Another plot could be that Robin's pregnancy is part of a prophecy in the One Piece world. As she is pregnant, she starts having strange dreams and visions related to the future of the world. The Straw Hat crew then embarks on a journey to find out more about these prophecies and protect Robin and her unborn child from those who might want to use or harm them for their own gain.
One possible idea for a fanfiction could be that Robin discovers she's pregnant during a time of relative peace on the Straw Hat ship. She might initially be worried about how the crew will react, especially considering their adventurous lifestyle. But as time passes, the crew shows overwhelming support and they start making preparations for the baby on board, like creating a safe nursery area. This could also lead to some comical moments as the usually rowdy crew tries to be more gentle and quiet around Robin.
In a fanfiction, Robin could be pregnant as a result of a relationship with a character from another pirate crew. This would bring about a whole new set of challenges and storylines. For example, there could be a conflict between the two crews over the pregnancy, or they could come together in an unexpected alliance. The pregnancy could also be a symbol of hope for a new era of peace between different pirate groups in the One Piece world.
Nico Robin was the sole survivor of the Ohara incident. Her mother was a scholar on the island of Ohara. The World Government feared the knowledge being explored there, especially about the Void Century. Robin was just a child when she witnessed the destruction of her home. She was then on the run, constantly hunted. She had to rely on various pirate crews at times just to survive, all while being labeled as a 'devil child' because of her ability to read the Poneglyphs, which are ancient stones with important secrets. This difficult past has made her a very complex and strong character in One Piece.
One possible fanfiction could be that Robin discovers she's pregnant unexpectedly. She might initially be in shock, given her career - focused nature. In the HIMYM universe, this could lead to various reactions from the gang. Ted might offer his over - the - top romantic support, Barney could struggle with the idea of a more 'settled' Robin, and Lily and Marshall would probably be the practical and emotional support she needs as she navigates this new chapter in her life.
One idea could be a story where Luffy, Nami and Robin get stranded on a mysterious island. Luffy is eager to explore, Nami is worried about resources and Robin is interested in the island's history. They work together, with Luffy's leadership, Nami's navigation skills and Robin's knowledge to survive and find a way off the island.
Robin herself could become more protective and motherly. She might start to see the world in a different light, thinking more about the future for her child rather than just her own research and the crew's adventures. For example, she could be more hesitant to engage in dangerous battles.
Another idea is that they time travel to a random point in the past, like when Gol D. Roger was still alive. Luffy would be excited to meet the Pirate King. Roger might see something special in Luffy and give him some cryptic advice. Robin could ask Roger about the secrets he knew about the world's history. This encounter could have a huge impact on Luffy's journey and how he views his role as a pirate.
One possible fanfiction could be that Barney and Robin find out they're pregnant unexpectedly. Maybe they initially panic as they had not planned it so soon. But then they start to get excited about becoming parents and think about how to combine their different lifestyles. Barney might start thinking of how to be a cool dad, while Robin pictures herself as a strong, working mother.
In this fanfiction, Romeo and Ruby could discover they're pregnant right when they were about to make big plans for their future, like going to college or traveling. The pregnancy forces them to re - evaluate their dreams. They might struggle at first, but eventually find a way to adapt and create new dreams that include their baby.
The destruction of Ohara is crucial. Robin was just a child when it happened. After that, she had to learn to survive on her own. She faced betrayal from people who were afraid to be associated with her. Her decision to keep studying the Poneglyphs despite the danger was also a significant event. And finally, her encounter with the Straw Hat crew and deciding to join them changed her life for the better.
One possible plot could be that they are on a new island during their adventures in One Piece. Since they are pregnant, the crew has to be extra cautious. Zoro might struggle with the idea of being a father as he has always been focused on his swordsmanship. He could start training in a new way to protect his future family. Robin, on the other hand, would use her knowledge to ensure a safe pregnancy. She might research about any potential threats to the babies from the various historical texts she has access to. The crew would also rally around them, with Sanji cooking special nutritious meals for the expecting parents.
It's a rather unique concept. In the traditional One Piece world, male characters don't get pregnant. So this kind of fanfiction challenges the norm. It might be interesting as it could explore different aspects of Sanji's character in a very unorthodox situation. For example, how would he handle the physical and emotional changes? It also allows fans to play with the idea of gender roles and biological norms within the One Piece universe.