Imagine if All Might was initially hesitant to get close to baby Izuku because he was afraid of his own influence on such a young life. But then, an event like a villain attack on the city where baby Izuku is in danger makes All Might realize he has to step up. He saves Izuku and from that moment on, he decides to be a constant presence in Izuku's life. He starts teaching Izuku about self - confidence and hero values in a very personal and hands - on way, which develops their relationship in a really special and unique way.
They could develop a symbiotic relationship. Maybe Nomu has a power that All Might needs to defeat a greater evil, and in return, All Might helps Nomu to become more than just a mindless weapon. This would require them to trust each other, which is a unique take on their relationship considering their normal opposing natures. Also, the story could explore how their relationship changes as they face different challenges together.
The relationship could be developed through shared dreams. Every night, Naruto and Kurama enter a dreamscape where they can communicate freely without the interference of the outside world. In these dreams, they gradually open up to each other about their past traumas. For Naruto, it could be about his loneliness as a child, and for Kurama, it could be about his long - held resentment towards humans. Through this sharing, they grow closer.
The relationship could develop through shared experiences like exploring new places. For example, the human could take the Sparkling Arcee to a beautiful natural location on Earth that Arcee has never seen before, and this shared wonder could deepen their bond.
In the fanfiction, Izuku may start to undermine All Might's actions. He could try to expose any flaws or wrongdoings of All Might. Their relationship goes from one of idolization and guidance to one of opposition. Izuku no longer looks up to All Might and may even try to bring him down. For example, he could spread rumors or try to find evidence against All Might if the story goes in that direction.
One way to develop their relationship uniquely is through the Force. Anakin could discover that Baby Leia has a very strong but unrefined connection to the Force. He then takes it upon himself to gently guide her, not in the traditional Jedi way, but in a more personal and emotional way. This would create a deep and different kind of connection between them. Also, Anakin might share his own experiences of growing up as a slave with Baby Leia in a way that she can understand as she grows older, which would strengthen their bond on a very personal level.
The relationship could be developed uniquely by having Sabine's futa nature play a role in their communication. For example, she might have a different way of expressing emotions or intentions because of it. Ezra could learn to understand this new aspect of her, and it could bring them closer together.
The relationship could develop uniquely if Sasuke, in his yandere mode, starts leaving little gifts for Naruto that are related to their shared past. For example, a kunai like the one they used when they were kids. This would make Naruto feel a sense of nostalgia and draw him closer to Sasuke. Another way is for Sasuke to create situations where Naruto has to rely on him completely, like setting up a false enemy attack and then saving Naruto heroically.
The relationship could be developed uniquely by having Kise's yandere side be a result of a past trauma related to losing someone important, and he sees Kuroko as the one he can't lose again. So, instead of the typical possessive actions, he tries to protect Kuroko from all possible harm in a very over - the - top way. For example, he might hire bodyguards to watch over Kuroko secretly. Kuroko, in turn, could initially be confused but then grow to understand Kise's intentions and help him heal his past wounds, which would deepen their relationship in an unexpected way.
They could be involved in a cross - dimensional adventure. Maybe Naruto accidentally opens a portal to a dimension where Kushina is still alive but in a different situation. They then have to adapt to this new world together and in the process, their relationship evolves. It could involve learning new skills from each other and facing strange creatures. Also, their communication could be a key factor. If Naruto starts to communicate with Kushina in a different way, like through a special Uzumaki - only form of telepathy, it would be a unique aspect of their relationship development.
The relationship could develop uniquely if Fem Harry Potter uses her empathy skills. Since she is different from the original Harry, she might be more in tune with Bellatrix's pain and past traumas. For example, if she discovers that Bellatrix was once a victim of dark magic herself which led her to become a Death Eater, Fem Harry Potter could try to heal her. This would create a very different dynamic compared to the usual enmity between Harry and Bellatrix.