Healing is another common theme. Both characters usually have their own emotional wounds. In these fanfics, through their relationship of adoption, they help each other heal. For example, Bucky's stability can help Tony deal with his insecurities, and Tony's intelligence and humor can help Bucky come to terms with his past.
There's 'Bucky's New Family' which is also a great 'bucky adopts tony fanfic'. In this one, Bucky finds Tony in a difficult situation and decides to adopt him. It delves into how they both cope with their past traumas while building a new family - like bond. It's full of heartwarming moments.
At first, it might be a bit rocky. Tony, being used to his own space, might feel smothered by Steve and Bucky's over - protectiveness. But as time goes on, he'll start to see their good intentions. Steve's moral compass will inspire Tony to be a better person, and Bucky's loyalty will make Tony feel secure. Eventually, they'll become like a real family, with Tony looking up to Steve as a father figure and seeing Bucky as a cool older brother.
In this fanfiction, perhaps Steve and Bucky come across Tony when he's being bullied in school for being a genius. They see his potential but also his vulnerability. So, they adopt him. As time passes, Tony starts to show an interest in Steve's shield and Bucky's combat skills. They encourage his inquisitive nature. Steve cooks for them all, creating a homey atmosphere. Bucky teaches Tony how to deal with nightmares as he has his own experiences. And Tony, in turn, uses his intelligence to improve their living situation and help them in their own missions in some way.
One common theme is redemption. Bucky has a complex past and Tony often has to come to terms with that. Another theme is friendship. They are two very different characters but in fanfic they often find common ground and become friends.
One possible scenario in this fanfic could be that Bucky and Steve notice Tony is overworking. So they start by making sure he eats regularly. Steve might cook his old - fashioned but hearty meals, while Bucky keeps Tony company during meal times to make sure he actually eats. They also likely limit his access to the workshop for a while, to force him to rest. Maybe they set up a little relaxation area in Tony's living quarters with comfortable chairs and soft music.
The theme of friendship also runs strong. As Bucky protects Tony, they start to form a bond that goes beyond just protection. They become friends who support each other through various difficulties. Additionally, there's often the theme of sacrifice. Bucky is willing to put himself in harm's way to protect Tony, showing his selfless side.
One common theme is the exploration of identity. Since Tony is female in these fanfics, it often delves into how this change affects her relationship with Bucky and her place in the Marvel universe. Another theme is redemption. Bucky, with his complex past, often goes through a journey of redeeming himself in the eyes of fem - Tony.
One great 'bucky fem tony strak fanfic' is 'The Unlikely Alliance'. It explores the complex relationship between Bucky and Tony in an alternate universe where Tony is female. The story is filled with action and their banter is really engaging.
There could potentially be a 'tony bucky sex powered alien ship fanfic' out there given the wild and creative nature of fanfiction. But it's not a mainstream or well - known type of fanfic. It might be something that a very small group of fans with very specific interests have created. Also, due to the nature of the title, it might not be suitable for all audiences or all fanfic platforms, which usually have content guidelines to follow.