A really interesting plot twist could be that an old enemy from either of their pasts tries to sabotage their marriage. Let's say someone from Luna's time at Hogwarts, who was jealous of her, teams up with a former Death Eater acquaintance of Draco's. They could spread false rumors about the couple, which would cause a lot of chaos in the wizarding community. And to make matters worse, this could lead to some sort of legal trouble for their marriage, like an investigation into whether Draco has truly reformed from his dark past.
Well, a plot twist could be that Luna discovers Draco has been involved in some sort of dangerous dark magic deal in the past that he hasn't fully come clean about. This could create a huge rift between them as Luna is a very pure - hearted person. Or perhaps there's a miscommunication spell that makes them believe things about each other that aren't true, like Luna thinking Draco is still a Death Eater at heart when he's actually changed. It would take a lot of effort to clear up this misunderstanding.
One possible plot twist could be that Draco's family objects strongly to the marriage. His pure - blood supremacist parents might see Ginny, a Weasley, as beneath them. They could try to sabotage the relationship, which would create a lot of drama. Maybe they'd spread false rumors about Ginny in the wizarding community.
One possible plot could be that Draco and Luna get married in secret to avoid the chaos that would ensue in the wizarding world due to their different backgrounds. They then start a new life away from the prying eyes, perhaps in a small cottage near a magical forest. Luna uses her unique magical knowledge to help Draco understand and embrace a different side of magic, while Draco's Slytherin cunning helps them protect their new home from any threats.
Perhaps a plot twist could involve a mystery related to the arranged marriage itself. It could be that there was a hidden prophecy or an ancient magical pact that led to their arranged union. As Draco and Luna try to figure out the true reason behind their marriage, they uncover secrets about their families and the wizarding world that no one else knew. This discovery could either strengthen their bond as they face these revelations together or put a strain on their relationship as they struggle to come to terms with the new - found knowledge.
Well, a plot twist might be that their demigod powers are not what they seem. Draco might think his power is related to his family's dark arts background, but it turns out to be something completely different like the power to heal. Neville could be thought of as having a rather simple plant - related power, but it actually is the key to unlocking an ancient demigod magic. Luna, on the other hand, might be thought of as a bit of an oddball with her powers, but she actually has the power to see the future, which is crucial for their quests.
One possible plot twist could be that Sakura discovers Kakashi has a secret past she never knew about. Maybe he was involved in some kind of dangerous mission long ago that has consequences in the present. This could put a strain on their relationship as she tries to come to terms with this new information.
One possible plot twist could be that just before the wedding, Ayame discovers a long - lost relative who has some dark secrets about Kouga's family. This relative tries to stop the wedding by revealing these secrets to Ayame. Another could be that on the wedding day, an old enemy of Kouga shows up and challenges him to a fight, putting the wedding on hold. Or perhaps there is a misunderstanding where Ayame thinks Kouga has betrayed her trust in some way, like he made a deal with an enemy for the sake of the tribe but didn't tell her.
Maybe Hikari suddenly gets an amazing job opportunity in a far - off place. This would force them to decide between following Hikari's career dreams and staying in their current comfortable life. It could lead to some really emotional and tense moments in the fanfiction.
One possible plot twist could be a long - lost relative showing up at the wedding and revealing a family secret that threatens to stop the marriage. For example, if there's a feud in the family that was hidden from Heiji and Kazuha.
One possible plot twist could be that their marriage is part of a larger plan to infiltrate an enemy organization. They pretend to be a happily married couple but are actually gathering intel. Another could be that Neo's past catches up with her during the wedding, and they have to deal with old enemies trying to disrupt the celebration.
One possible plot twist could be that they face opposition from the Hidden Leaf Village. Since same - sex relationships might not be as openly accepted in the traditional ninja world. Another twist could be that they have to go on a dangerous mission together right after getting married, which tests their new relationship. And perhaps there's a secret enemy who wants to break them apart because their union represents a new kind of hope in the village.