It can be interesting if the dissolution of alliances is a slow and painful process for Harry. For example, he might start to notice small cracks in the alliance with his friends at Hogwarts. Maybe they are becoming too influenced by the pure - blood ideology and Harry, being a half - blood, feels left out. This would gradually lead to the dissolution of that alliance and Harry would have to find his own path, which could make for an engaging story.
Another interesting alliance could be between Ron and Keroberos. Ron, with his love for food, might be constantly bribing Keroberos with treats to get information about the Clow Cards or to ask for his help in some comical situations. Keroberos, being a bit of a glutton himself, would be easily swayed by Ron's offerings.
Political alliances in Naruto fanfic are significant as they can change the power dynamics in the ninja world. An alliance between two major villages can make them a formidable force, deterring other villages from attacking them.
Perhaps the fanfiction focuses on a parallel universe where Snape, Harry and Lucius are all on the same side from the start. They are part of a secret group that is trying to reform the wizarding world's education system. Their different perspectives - Snape's strictness, Harry's compassion and Lucius' cunning - combine to create a powerful force for change.
The idea of an unlikely alliance in a Batman Robin Ray fanfic can be really exciting. Batman is used to working alone or with Robin in the dark alleys of Gotham. Ray might be from a different kind of world, maybe with more of a scientific or otherworldly origin. When they come together, their different fighting styles and mindsets would clash at first. But as they get to know each other better, they realize that they can use each other's strengths. For instance, Ray's knowledge of advanced technology could help Batman upgrade his gadgets, while Batman's combat experience could teach Ray how to better defend himself in a fight.
A Batman and Harley Quinn fanfic could show them forming an alliance against a greater threat. For instance, a new super - villain emerges who is more dangerous than the Joker. Batman realizes he needs Harley's knowledge of the criminal underworld to stop this new foe.
Well, a simple fanfic could be that there's a misunderstanding. The Hidden Leaf Village suspects Shion of something bad, but Naruto and Hinata believe in her innocence. They team up to prove that Shion is not a threat. Along the way, they discover a plot by an outside force to frame Shion. Naruto uses his combat skills, Hinata uses her Byakugan to find clues, and Shion uses her spiritual powers to help them uncover the truth.
He might break family alliances by publicly opposing the values that these families stand for. For instance, if a family is known for its strict pure - blood ideology and Harry speaks out against blood purity, it could be seen as a break in the alliance.
Isolation is also a common theme. Characters who were once part of a strong alliance may find themselves isolated when the alliance breaks. They have to fend for themselves and figure out their new place in the wizarding world. This can lead to self - discovery for some characters as they learn more about their own strengths and weaknesses outside of the group they were once part of.
Well, in such a fanfic, an unlikely alliance could form. Maybe Hamilton realizes that the King has some valuable insights on governance, despite their differences. So he decides to work with the King on certain diplomatic matters. This would shock everyone around them as they are supposed to be on opposite sides.