In many fanfictions, the timing of Lily and James' first meeting varies. Some depict it during their school years, while others have different creative takes.
In a parallel universe fanfiction, the universe has shifted in a way that allows James and Lily to meet Harry. This could be due to a powerful spell gone wrong. James and Lily are alive in this universe and are curious about Harry, who seems to be from a different reality. They learn about his struggles against Voldemort and decide to help him, and together they work to find a way to fix the rift between the universes.
Well, it could start with disbelief on all sides. Harry can't believe he's actually meeting his parents. James and Lily are astonished to see the product of their love all grown up. As they start to interact, they would find common ground in their fight against the dark forces. James and Lily would see Harry's courage and be proud. Harry would see the kindness and love in his parents that he always hoped for. They would bond over their shared magical abilities and the desire to protect their loved ones, and their relationship would grow deeper and deeper as they spend more time together.
Harry would often be a main character in these fanfictions. Since it's about bashing his parents, his reaction and how he copes with the new view of them is a big part of the story. Another could be Sirius Black. He was very close to James, so fanfictions might explore his feelings towards the bashing of his best friend.
One common theme is family love. Since they are family, many fanfictions explore the deep love between Lily, James and Harry. Another theme is sacrifice. Given James and Lily's sacrifice for Harry, it's often explored further in these stories. For example, how their sacrifice influenced Harry's character and actions.
One possible fanfiction could focus on the moments leading up to their death. It might show James trying to protect Lily and Harry until the very last moment. He could be shown using his wand to fend off Voldemort as long as he could, while Lily was huddled in a corner with baby Harry, praying for a miracle.
Well, it could lead to a very different story. Harry's childhood and upbringing would be completely changed, and the dynamics of the wizarding world might shift.
Love is a very common theme. It shows how James and Lily's love developed, from their initial meeting to falling deeply in love. Another theme is sacrifice, like how they were willing to sacrifice themselves for Harry. And family is also important, as they were about to start their own family when tragedy struck.
One of the main themes is loss. With Lily leaving James, there's a sense of something being broken in Harry's family. It's about how Harry deals with that void in his life.
One great fanfiction could be 'Lily and James: A Love Beyond'. It delves deep into their relationship before Harry was born. It shows how they met at Hogwarts, their initial dislike which gradually turned into love. The story also includes their adventures as members of the Order of the Phoenix and how they fought against the Dark forces side by side.