Another plot could involve Zoro arriving in a post - apocalyptic other world. He discovers that his swordsmanship is highly valued as people are constantly fighting for scarce resources. He becomes a sort of leader among a group of survivors, using his skills to protect them from bandits and mutated beasts.
One idea could be that Zoro ends up in a world full of magic. He has to learn to adapt his sword skills to combat magical creatures. Maybe he teams up with a local wizard who helps him understand the new world's rules while he teaches the wizard about honor in battle.
Perhaps Goku lands in a world where the inhabitants are all pacifists. He has to find a way to protect this world from an external threat without using his usual brute force, which could lead to him developing new skills. Also, he might find himself in a world with a different concept of time, which messes with his ability to power up in his usual way.
One idea could be that the Akatsuki members are transported to a world full of magic. They have to adapt their ninja skills to this new environment. For example, Sasori might find new materials to create his puppets, and Deidara could be intrigued by the different ways to create explosions in this magical world.
One idea could be Naruto arriving in a world full of magic, and he has to learn to combine his chakra skills with magic. For example, he might use his Rasengan with a magical spell to create a super - powerful attack.
Another plot could be that Vegeta lands in a world where time moves differently. He might age at a much faster or slower rate. This would add an extra layer of complexity as he tries to figure out how to get back to his own world while dealing with the changes in his physical state and the relationships he forms in this new world.
Maybe in this other world, Ichigo discovers a group of people who are similar to the Soul Reapers but have different powers and a unique hierarchy. He could get involved in their internal conflicts and help bring peace while also trying to find a way back to his own world.
One idea could be that America is in a world where magic exists. The government has to adapt to regulate magical powers. Another could be a world where America is the only non - technological nation and has to rely on old - fashioned ways while other countries thrive with advanced tech. And perhaps a world where America is split into multiple kingdoms and there's a power struggle between them.
One idea could be Zoro seeking extra training from Mihawk in a secluded place. During this time, they start to understand each other's pasts and the reasons behind their swordsmanship. Another could be a scenario where they have to team up against a common enemy that threatens the world of swordsmen. This would force them to combine their skills and learn to trust one another on a deeper level.
In the fanfiction, the baby could have some unique abilities inherited from both Zoro and Robin. For example, it could have Zoro's sense of direction in combat and Robin's ability to read ancient texts. This could lead to many interesting adventures as the crew tries to understand and help the baby develop these powers.
Well, they could be in a situation where a powerful enemy targets female Luffy specifically because of her unique abilities as a female version of Luffy. Zoro vows to protect her at all costs. This could lead to some intense battles where Zoro has to fight opponents far stronger than him while trying to keep female Luffy safe. Meanwhile, female Luffy could be using her smarts and powers to find a way to defeat the enemy from the sidelines, perhaps by finding its weakness and relaying it to Zoro during the fight.
One idea could be that during a dangerous adventure, Zoro and Robin get separated from the crew in a mysterious island. There, they have to rely on each other for survival. As they face various challenges together, their bond deepens and a romantic relationship starts to form, filled with their unique personalities interacting. For example, Zoro's tough and straightforward nature combined with Robin's calm and intelligent demeanor.