The plot might involve Harry and Ginny sharing stories of their battles against Voldemort with the Marauders. In the process of teaching, they could also learn from the Marauders' own pranks and their way of dealing with difficult situations at Hogwarts. This exchange of experiences could lead to new friendships and a better understanding between the two groups.
Well, perhaps in the fanfiction, Harry and Hermione teach the Marauders advanced magic that they themselves have learned in their own time. For example, Hermione could teach Remus some new spells for defense against the dark arts, and Harry could show James some Quidditch techniques that he developed later. They could also try to change the Marauders' view on Snape, trying to prevent some of the animosity that developed between them.
Well, perhaps in this fanfiction, Harry and Ginny teach at Hogwarts during a time of new threats. They use their unique skills to train students in a more practical way. Ginny, as a Quidditch star, could revolutionize the Quidditch teaching. Harry, on the other hand, might introduce new defensive spells that he learned from his adventures. And they could also have to deal with the politics within Hogwarts, like some teachers being jealous of their popularity among students.
Well, it could be that Harry and Ginny use their own experiences with dark creatures and magic to create really interesting and hands - on lessons. For example, Harry might demonstrate how to fend off a Dementor using a Patronus charm, while Ginny could show how to deal with a Boggart in a practical way.
Obviously, Harry and Ginny are main characters. Harry, with his knowledge of the future events and his skills as a powerful wizard. Ginny, who is also a talented witch. And then, of course, the Marauders - James Potter, Sirius Black, Remus Lupin and Peter Pettigrew. They are the ones being taught, so they are also central to the story.
They might be surprised. Harry is like a successor to them in a way, and seeing his relationship with Ginny in fanfiction could be unexpected for them. They could also be amused, thinking about how things have turned out in this fictional portrayal.
The Marauders meeting Ginny in a fanfiction could lead to all sorts of interesting scenarios. Maybe Ginny is a bit star - struck at first, since the Marauders are sort of legends in the wizarding world. They could exchange stories about Hogwarts. Ginny might tell them about how the school has changed over the years, and the Marauders could regale her with tales of their own school days. It could also be a story about Ginny learning from the Marauders' more unorthodox ways of using magic.
One possibility could be that the Marauders plan to prank the Slytherins in a big way. They might use their Animagus forms to sneak into the Slytherin common room and create chaos, like turning all their robes pink or making their beds float. It would be a classic Marauders' style of mischief.
One possible plot could be that the Marauders, in some magical time - travel or alternate reality scenario, get to meet baby Harry. They might be overjoyed to see him and immediately vow to protect him. Sirius could be especially attached, given his future relationship with Harry. They might also play with baby Harry, making him giggle with their magic tricks.
If Harry and Ginny meet the Marauders in fanfiction, it would be a moment full of emotions. Harry has always longed to know more about his father, and this would be his chance. The Marauders, on seeing Harry, might see a lot of James in him. Ginny would add a different dynamic to the group. She could be the voice of reason at times. Together, they could create new memories. For example, they might team up to play a prank on Snape's memory or something, which would be both funny and a way to pay homage to the Marauders' legacy.
In this fanfiction's afterlife, Harry and Ginny might be in a place where time has no meaning. They could be constantly surrounded by a warm, golden light that represents all the love and positive energy they've created during their lives. They start to discover hidden powers within themselves that allow them to shape the afterlife realm. For example, they might create beautiful gardens filled with magical plants that only exist in their memories from Hogwarts. Their relationship becomes even deeper as they work together to make this afterlife place a haven for other souls.