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.
Maybe they get married after they both realize they have a shared interest in the more esoteric aspects of magic. They could then embark on a journey to discover ancient and forgotten spells together. Their marriage becomes a partnership in magical research. They face opposition from some of their old Hogwarts classmates at first, but as they prove that their union is based on love and a mutual respect for magic, people start to accept them.
A plot could involve Draco and Luna getting married as part of a plan to heal the rift between Slytherin and Ravenclaw houses. Their marriage is a symbol of unity. They hold magical ceremonies in both houses' common rooms, incorporating elements from both Slytherin's pride and Ravenclaw's wisdom. As they start their married life, they also start a school - like initiative within Hogwarts to teach students about the importance of looking beyond house rivalries and into the shared love for magic.
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.
Draco might become more open - minded. Luna's free - spirited and accepting nature could influence him to let go of some of his Slytherin prejudices. He might start to see the beauty in things he previously dismissed. For Luna, she could become more assertive. Draco's confidence (even if it was sometimes misdirected in the past) could rub off on her, and she might be more vocal about her ideas and beliefs in their relationship.
One possible unique plot could be that Draco and Luna discover they are demigods during a school event at Hogwarts. They are then tasked with protecting a magical artifact that is being hunted by dark forces. Along the way, they learn about their divine parents and the powers they inherit, and have to combine their Slytherin and Ravenclaw traits to outwit their enemies.
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.
One possible plot could be that Draco and Luna, as twins, are separated at birth due to some dark family secret. Draco grows up in the Malfoy household, influenced by the pure - blood supremacist ideals, while Luna is raised in a more eccentric and free - spirited environment. As they reach Hogwarts age, they start to discover strange similarities between them and begin to suspect that they are related. Eventually, they team up to uncover the truth about their past and in the process, they also change the views of those around them, with Draco learning to be more open - minded from Luna and Luna learning some self - defense and strategic thinking from Draco.
One idea could be that they discover their pregnancy unexpectedly. Maybe they were friends who gradually fell in love and now have to deal with the new life coming. They might face challenges from their different backgrounds. Draco from a more traditional pure - blood family and Luna with her unique, free - spirited ways. Their friends could have mixed reactions, some being supportive while others being skeptical.
One idea could be that after the war, Harry and Luna start to spend more time together while helping to rebuild Hogwarts. They discover they have a shared love for exploring the Forbidden Forest in a more peaceful way. As they bond over their unique experiences and views of the wizarding world, their friendship turns into love, and they decide to get married, with a ceremony that combines their love for nature and magic, like having the venue filled with magical creatures and floating lights.
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.
Well, in a 'Harry Hermione Draco married life' fanfiction, perhaps they live in a big manor. Hermione might be the one who keeps the household organized and also continues her research in magic. Harry could be out most of the time, dealing with threats to the wizarding world. Draco, on the other hand, might be trying to redeem his family's name. Their married life would be full of interesting dynamics. There would be times when they argue about how to raise their kids, whether to follow the old pure - blood ways or the more liberal muggle - born friendly ways. But in the end, their love for each other and their family keeps them together.
One popular 'Draco Luna fanfiction' story could be 'The Enchanted Bond'. It explores a unique relationship between Draco and Luna where they team up to solve a mystery in Hogwarts. Another is 'Draco's Redemption with Luna' which shows Draco's journey towards a better self with Luna's influence. And 'Luna's Discovery of Draco' is also great, it delves into Luna seeing a different side of Draco that no one else has.