One idea could be that two characters who don't get along, like Weiss and Yang, are handcuffed together. They have to work together to complete a mission. At first, they bicker and struggle against each other, but as they face various challenges, they start to understand each other better and form an unlikely friendship.
Maybe Bulma and Chi - Chi get handcuffed together. Bulma is all about technology and Chi - Chi is more traditional. They start off arguing but then realize they can combine their skills. Bulma uses her smarts to try and find a way to unlock the handcuffs while Chi - Chi uses her knowledge of martial arts to protect them from any threats that come their way during this ordeal.
If two characters are handcuffed together, they are forced into close proximity. This can lead to a quicker development of their relationship. For example, if it's Jaune and Pyrrha, Pyrrha might see a more vulnerable side of Jaune as they struggle with the inconvenience of being handcuffed. This could make her more protective of him, and Jaune could become more confident in himself as he sees how much Pyrrha cares.
Well, perhaps in a fanfiction, Danny Phantom is handcuffed together with a ghost hunter who initially wants to capture him. But as they are handcuffed, they start to understand each other better. They might be forced to face some common enemy while handcuffed, which makes them rely on each other's skills. Danny could use his ghost powers in creative ways to protect both of them, and the ghost hunter could use his knowledge of gadgets to try and find a way to remove the handcuffs.
One idea could be that a magical accident during a spellcasting class results in two characters being handcuffed together. They then have to work together to find the key or a way to break the spell, all while dealing with their own personal differences and the chaos of the academy. For example, Akko and Diana could be handcuffed. Akko's impulsive nature might clash with Diana's more reserved and proper attitude at first, but as they struggle to get free, they start to understand each other better.
Another plot could involve Nicole getting handcuffed during a dangerous mission. She has to rely on her wits and the help of her friends, especially Waverly, to get out of the situation and complete the mission successfully.
One possible plot could be two rival Pokémon trainers being handcuffed together by some strange device or magic. They initially struggle against each other but gradually learn to work together as they face various challenges in the Pokémon world, like dealing with wild Pokémon attacks. This forces them to use their Pokémon's skills in unison.
Ash and Gary could be great main characters. They have a long - standing rivalry. If they were handcuffed together, it would be really interesting to see how they interact. Their different Pokémon - training styles would either clash or, over time, complement each other.
One idea could be a new student arriving at the school with a mysterious power that no one has seen before. This could cause both excitement and suspicion among the other students.
One idea could be a mercenary who is hired by a mysterious client to steal an ancient relic from Beacon Academy. He has to navigate through the various defenses and teams of Huntsmen and Huntresses.
A plot could involve an esports competition where teams from different kingdoms in the RWBY universe compete. The story could explore how the RWBY team overcomes rivalries and strategic differences. They might also have to deal with a mysterious hacker trying to disrupt the tournament.