Well, it could be about Teddy having a dream where he meets his parents. In the dream, Remus and Tonks are as he's always imagined them. They tell him how proud they are of him, even though they didn't get to see him grow up. This simple encounter could be a very moving and emotional one, with Teddy waking up with a newfound sense of purpose and connection to his parents.
Maybe the fanfiction could center around Teddy finding a magical object that has the power to bring back the memories of his parents. As he activates it, Remus and Tonks' memories start to manifest in front of him. He gets to have conversations with them, ask them questions he's always had, like what their favorite spells were or how they met. This would be a story that delves deep into the relationship between Teddy and his parents through these memory - based interactions.
One possible scenario in this fanfiction could be that Teddy shows some unique magical abilities that remind Remus and Tonks of their own magical heritages. Maybe Teddy can transform in a way that combines both werewolf and metamorphmagus traits, which would be a really interesting plot point. It could also explore how Remus and Tonks, who had such a tragic end in the original story, get to experience some happy moments with their son Teddy through the magic of fanfiction.
In such a fanfiction, perhaps Remus and Tonks could have a heart - warming reunion with Teddy. They might share precious family moments, like Tonks teaching Teddy some fun magic tricks that she learned when she was young. Remus could tell Teddy stories about his own adventures at Hogwarts.
A common theme could be the power of memories. Remus and Tonks might share their memories with Teddy, which would help him understand his heritage. Another theme could be the idea of second chances. They never got to be a proper family when they were alive, but in the fanfiction, they get a chance to start anew. And of course, the theme of magic is always there. They could use magic in creative ways to bond with Teddy, like creating magical family portraits or using spells to play games together.
Perhaps the Marauders are summoned by some dark force in Teddy's time. Teddy, having heard of their adventures, helps them figure out what's going on. They teach Teddy some of their old - fashioned spells and tricks, while Teddy shows them new ways of magic. Together, they face the dark force and emerge victorious, with the Marauders having to find their way back to their own time.
Maybe Remus leaves because he feels unworthy. He has always seen himself as a danger and an outcast. Despite Tonks's love, he can't shake off his self - loathing. So, in the fanfiction, he leaves while Tonks is pregnant, leaving her heartbroken. However, their friends, like the members of the Order of the Phoenix, might try to convince Remus to come back and be a family with Tonks.
Well, one possibility could be that in this fanfiction, Lupin sees Hermione's intelligence and loyalty in a way that he feels a deeper connection with her compared to Tonks. Maybe Hermione helps him in some sort of magical research or during a difficult time at Hogwarts, and through those experiences, his feelings for her grow stronger than his feelings for Tonks.
One possibility could be that Teddy is visiting Hogwarts for some event, perhaps a special anniversary celebration. James and Lily, being students at Hogwarts, cross paths with Teddy. Teddy, being the son of Remus Lupin and having a connection to their family through Harry Potter (James and Lily's son), might share some interesting stories about their parents' time at Hogwarts. Maybe he tells them about the Marauders and how their father and his friends were quite the mischief - makers. It could be a heartwarming encounter where James and Lily get to see a different side of their family's history through Teddy.
Love against all odds is a very common theme. Given Remus' condition as a werewolf, they face a lot of opposition and prejudice. Fanfictions often explore how their love overcomes these difficulties.
One idea could be Teddy exploring his father's memories through a magical object and having conversations with Remus in those memories. It could be a way for Teddy to really understand his father on a deeper level.
Well, it could be about Teddy Lupin traveling back in time and meeting his father's friends, the Marauders. Maybe he gets to experience their pranks first - hand and learns some new magical tricks from them.