Perhaps there could be a story where Baymax starts to develop more human - like emotions and he and Hiro have to deal with the implications of that. Hiro might help Baymax understand these new feelings while also learning more about himself in the process.
A third plot could be a time - travel adventure. Baymax and Hiro accidentally get sent back in time. They have to figure out how to get back to their own time while also making sure they don't disrupt the past too much. Baymax's knowledge of history (which he has stored in his database) comes in handy, but they still face many difficulties. Hiro has to use his wits to adapt to the old - fashioned technology, and together they form an unlikely duo that changes the course of history in small but important ways.
One possible storyline could be Hiro struggling with his new - found feelings for Baymax. He might initially be confused as Baymax is a healthcare companion, not a typical object of romantic affection. But as they spend more time together, he realizes that their bond is deeper than just friendship. For example, Hiro could have dreams about Baymax in a more romantic context and then have to come to terms with his feelings.
The potential for new adventures. The world of Big Hero 6 has so many possibilities for expansion. With Baymax as a human - like character, he and Hiro could go on all sorts of wild adventures that we can only imagine. They could explore different dimensions, meet new species, or even solve mysteries that are far beyond what they did in the movie. It allows the writer to really stretch their creativity and take the characters to places they've never been before.
One possible fanfic could be about Hiro and Baymax going on a new adventure outside of San Fransokyo. They could encounter a new type of technology that is causing problems in a neighboring city. Hiro would use his intelligence to analyze the situation and Baymax would be there for support and protection, with his medical knowledge coming in handy if anyone gets injured during their investigation.
One way is to explore their different personalities more deeply. Baymax is calm and logical, while Hiro can be impulsive. By putting them in situations where these traits clash and then resolve, their relationship can grow. For instance, when they are trying to rescue someone and Hiro wants to rush in, but Baymax stops him to make a better plan. Also, showing their mutual dependence on each other, like Baymax relying on Hiro to keep him updated on the latest tech, and Hiro relying on Baymax for emotional support, can further develop their relationship in fanfiction.
I'm not sure about specific 'Baymax x Hiro lemon fanfic' as it might involve non - canon and often inappropriate interpretations. However, if you're interested in their normal relationship in the official Big Hero 6 story, there are many heartwarming tales of their friendship and how they support each other through tough times.
Well, a possible plot for a Baymax x Hiro fanfic could be that they discover a new technology that is threatening the city. They have to work together, with Baymax using his medical knowledge and Hiro his technological skills, to stop the threat. It could also be interesting if there was a character from Hiro's past who returns and tries to drive a wedge between him and Baymax.
The fanfic could show their friendship evolving in a different way. Instead of the more straightforward progression in the movie, in the fanfic their friendship could hit some major bumps. For instance, Baymax might get influenced by some external factor that makes Hiro question their relationship. But through it all, they would eventually come back together, stronger than before.
The plot could be that Hiro and Baymax discover a mysterious portal. They decide to go through it out of curiosity. On the other side, they find a world where technology and nature are in a very different balance than in their own world. They meet new characters who are both friendly and hostile. Hiro has to use his wits and Baymax's skills to find a way back home while also trying to help the new world they've entered.
Yes, there are likely some out there. Fanfic communities are quite diverse and often explore different relationship dynamics. However, it might be a bit of a niche within the 'Big Hero 6' fanfic realm. You could start looking on popular fanfic websites like Archive of Our Own.