Momo might become more empathetic. Living with Izuku, who has such a big heart and always tries to save everyone, she could start to see things from different perspectives. She might also become more assertive in protecting their relationship. If there are any threats to their marriage, she would be the one to stand up and say 'no' firmly.
Izuku could develop more confidence in his personal life. Since he's married to Momo, who is intelligent and strong, he might learn to rely on her more, not just in battles but also in decision - making. For example, when it comes to handling their finances or choosing a new place to live.
Both Izuku and Momo could develop a new side of their quirks. Their relationship could inspire them to combine their quirks in new and unexpected ways. Maybe they develop a special move that they can only do when they are in sync both in their relationship and in combat. This could make them an even more formidable couple in the hero world and also show how their marriage has influenced their growth as heroes.
For Izuku, he might become more confident in his personal life. Marriage to Ochako gives him a sense of stability and he starts to show more leadership not just in hero work but also in his family life. He could also become more expressive of his emotions. Ochako, on the other hand, may develop a stronger sense of responsibility towards their relationship. She might be more assertive in her decisions and support Izuku in a more vocal way. For example, when Izuku is doubting himself in a tough hero mission, Ochako is there to boost his confidence.
One possible plot could be that Izuku and Momo face the challenges of balancing their hero work with their married life. They might have to deal with villains targeting their relationship or their combined strength. For example, a new villain might emerge who is jealous of their power couple status and tries to create rifts between them. They would then have to rely on their love and trust for each other to overcome these obstacles.
For Jaune, he might become more confident and assertive as he takes on the role of a husband. He could also develop new combat skills as he protects Neo. Neo, on the other hand, might start to open up more and show her softer side. Maybe she becomes more trusting of others.
One interesting fanfiction could be 'Izuku and Momo's Unlikely Bond'. In it, they might start off as study partners, gradually realizing their feelings for each other through shared challenges at school. Another could be 'A Blossoming Love: Izuku and Momo' where they are paired up for a hero mission and during that time, their relationship deepens.
One of the best developments is seeing Ichigo become more open with his emotions. In a married relationship with Orihime, he might learn to express his love and concerns more freely. For example, he could start writing her little love notes, which is a big change from his usually stoic self. Orihime, on the other hand, could become more confident. With Ichigo by her side as her husband, she might be more assertive in her decisions, especially when it comes to protecting their family and friends.
One possible plot twist could be that Izuku suddenly loses his powers right before the wedding. This would add a lot of drama as they have to figure out how to deal with this new situation. Momo might have to use her intelligence and creativity to find a way to get Izuku's powers back or to help him adapt to a powerless life. Another plot twist could be that a villain kidnaps Momo on the wedding day, and Izuku has to go on a rescue mission, showing his heroic side even on his big day.
One great izuku and momo fanfiction is 'A New Bond'. It focuses on their teamwork during a difficult training session at UA. The story shows how Izuku's determination and Momo's intelligence complement each other.
For Itachi, he could become more open and less brooding. Hinata's love and support might make him feel like he can finally let go of some of his past burdens. For Hinata, she could gain more confidence in herself. Being with Itachi, who is highly skilled, gives her the motivation to train harder and become a stronger ninja. Also, she might become more assertive in dealing with clan matters, especially when it comes to any opposition to their relationship.
Peter Parker could develop into a more responsible and family - oriented person. With Tala by his side, he might start to think more about the future and creating a stable life. He may also become more open about his emotions and rely on Tala for support in ways he didn't before.
Well, there's a fanfiction where Izuku marries Tsuyu Asui. In this one, they live a rather peaceful life in a small town near the mountains. Izuku helps the local community with his hero skills, and Tsuyu is involved in environmental conservation efforts. Their relationship is based on mutual understanding and respect for nature. Also, some fanfictions explore Izuku marrying a non - canon character, which can lead to really creative and unique storylines.