There are probably some. Fanfiction writers often explore different relationships between characters. You might find some really interesting stories with this pairing. Some could be about their unexpected friendship, or even a more complex emotional bond in an alternate universe scenario.
Definitely. The Marvel fandom is huge and diverse. Writers love to play around with different character dynamics. So, it's not at all surprising that there would be fanfiction where the Winter Soldier has some sort of positive feeling towards Tony. These stories can range from light - hearted adventures to more angsty, emotional tales depending on the writer's vision.
One common theme could be redemption. Maybe the Winter Soldier is trying to make up for past actions and forms a bond with Tony during that process. Another might be trust - building as they overcome their initial differences.
One great fanfiction could be where the Winter Soldier and Tony Stark are forced to team up. In this story, their initial distrust gradually turns into respect as they face a common enemy. They learn from each other's skills, with Tony's tech knowledge and the Winter Soldier's combat abilities complementing each other.
There's also 'Bucky's Vow'. In this fanfiction, Bucky feels a strong sense of protectiveness towards Tony from the start. It delves deep into their characters, showing how Bucky overcomes his past traumas to be there for Tony. The chemistry between them is really well - written.
A key element is often Bucky's past as the Winter Soldier. His training and instincts play a big role in how he protects Tony. For example, he can sense danger before others and uses his combat skills to keep Tony safe.
Another theme is the power of technology. Tony is a technological genius, and his tech often comes into play when dealing with Bucky. Sometimes it's about fixing Bucky's arm, other times it's about using tech to help Bucky deal with his mental programming. In some fics, they might even create new tech together, which shows how their skills can combine.
It could also be a new villain who has somehow managed to hack into the Winter Soldier's programming and redirect his mission towards kidnapping Tony. This villain might be someone who wants to create chaos between the Avengers by pitting the Winter Soldier against Tony. They stay in the shadows, pulling the strings while the Winter Soldier and Tony are caught in the middle.
One possible plot could be that the Winter Soldier is under some mind control still and is made to believe Tony is a threat to a certain organization. So, he kidnaps Tony to bring him to his handlers. But during the journey, some of the Winter Soldier's old memories start to surface, which makes him question his mission.
The 'mystery connection' trope is also seen a lot. This is where there is some hidden link between the two characters, like a shared enemy from the past that they don't initially know about. As they uncover this mystery, their relationship evolves and they become closer, whether it's as friends or something more.
One great Hermione and Winter Soldier fanfiction is 'A World of Crossovers'. It has an interesting plot where Hermione's magic gets intertwined with the Winter Soldier's past. The author does a great job of creating a believable connection between the two very different universes.
One great Tony Stark Winter Soldier fanfiction is 'The Unlikely Alliance'. It shows an interesting scenario where Tony and Bucky have to work together against a common enemy. The story is full of action and also explores their complex relationship.