Well, a really interesting plot twist could be that Yoruichi is actually a reincarnation of an ancient soul that was once bound to Ichigo's family in a very different way. And their marriage is a way to restore some sort of balance in the world of Bleach. Also, what if Ichigo suddenly starts to lose his powers during the wedding preparations? It could be due to some sort of curse or a side - effect of their impending union. Then they have to figure out how to get his powers back without cancelling the wedding.
A plot twist could be that an old enemy of Yoruichi resurfaces, seeing their marriage as an opportunity to get revenge. This enemy could be someone from her past in the cat clan or a Shinigami she had crossed paths with before. Now, Yoruichi and Ichigo not only have to plan their wedding but also defend themselves and their loved ones from this new threat.
A plot twist might be that Ichigo discovers some long - hidden family secret related to Byakuya during their marriage preparations. This secret could change the way he views Byakuya and their relationship, adding a layer of complexity and drama to the story. For example, it could be related to a past event that involved their ancestors.
Well, a plot twist could be that one of them loses their powers right before the marriage. For example, if Ichigo loses his Soul Reaper powers, he might start to doubt if he can protect Rukia and their future together. Or perhaps Rukia is suddenly called back to Soul Society for an important mission that she can't refuse, and it's a mission that might keep her there for a very long time, putting their relationship to a hard test. Also, there could be a new character introduced who has a mysterious connection to either Ichigo or Rukia and tries to disrupt the wedding.
A plot twist might be that Rangiku discovers a long - lost family secret just before the wedding. For example, she could find out that she has a connection to a powerful and mysterious clan that has some sort of vendetta against Ichigo's family. This would put a strain on their relationship as they try to figure out how to deal with this new information.
One possible plot twist could be that Yoruichi's love for Ichigo is forbidden in the Soul Society. Maybe there are rules against such relationships between different 'classes' or species. For example, Yoruichi being an ex - captain and Ichigo being a human - turned - Soul Reaper - substitute. This could lead to a lot of drama as they try to hide their feelings from others.
It could include how they break the news to their friends. Maybe they have a small gathering with their closest allies in the Soul Society, and everyone's reactions range from shock to extreme joy.
Well, the plot might involve some kind of prophecy or destiny that links Ichigo and Kukaku together. Maybe there's a mysterious force in the Soul Society that decrees they should be together. Their relationship could start with a shared adventure, like they have to team up to fight a powerful enemy. During this time, they start to understand each other on a deeper level. For the wedding, it could be a grand affair with all of Ichigo's friends from Karakura Town and Kukaku's allies in the Soul Society coming together. There could be some comical moments too, like Ichigo trying to understand the complex wedding traditions of the Soul Society.
One possible plot could be a post - battle scenario. After all the chaos and fighting they've been through, Ichigo realizes his true feelings for Rukia. They start to secretly date while trying to maintain their duties as Soul Reapers and protectors of the living world. Eventually, their friends find out and support them wholeheartedly. They plan a simple yet beautiful wedding in the Soul Society, with all their friends and comrades in attendance, and they live happily ever after, constantly going between the Soul Society and the living world to visit their loved ones.
The plot could involve Nemu saving Ichigo's life during a fierce battle. This act makes Ichigo see Nemu in a new light. They begin to spend more time together, sharing their past traumas and dreams. As they fall deeper in love, they decide to get married. However, they have to keep it a secret at first due to the political situation between Hueco Mundo and Soul Society. Eventually, their love story becomes an inspiration for others in both worlds.
One possible plot could be that Yoruichi trains Ichigo in some advanced Soul Reaper techniques. She could take him to a secret training ground where he has to face challenges that test his limits. This would not only strengthen his skills but also their bond as mentor and student. It could be about how Ichigo overcomes his weaknesses and gains new powers under Yoruichi's guidance.