Well, friendship is a big theme. You see, their relationship started as a friendship, and many fanfictions expand on that. They might write about how their different houses in Hogwarts affected their friendship. Also, redemption is a theme. Snape's actions towards the end of the main story can be seen as a form of redemption for his past mistakes, and fanfictions often play with this idea in relation to his relationship with Lily. And of course, the power of love. How Snape's love for Lily influenced his life and actions is always interesting to explore in these fanfictions.
Some fanfictions focus on the magical world building around their relationship. For example, how the magic they both possess might have interacted in different ways. A lot of them also deal with the theme of sacrifice. Snape sacrificed so much because of his love for Lily. Fanfic writers like to explore the full extent of that sacrifice and what it could have meant for their relationship. And then there's the theme of regret. Snape clearly had a lot of regret, and fanfictions often delve into how that regret could have played out in different scenarios involving Lily.
They are popular because their relationship is so complex. They were childhood friends, but then things went wrong. There's a lot of room for exploration in fanfiction. Writers can delve into what could have been, like if Severus had been able to keep Lily as a friend. Also, the unrequited love aspect from Severus's side adds a lot of drama.
The popularity of Severus Snape and Lily Evans fanfiction lies in the complexity of their relationship. Their story in the original books is filled with unrequited love, sacrifice, and regret. Fanfiction allows fans to explore what could have been, like if Lily had returned Snape's love.
One of the themes is the power of memories. Since Snape's love for Lily was so strong, his memories of her were a significant part of his character. Fanfictions often play with this idea, showing how his memories of Lily influenced his actions and decisions. Another common theme is the struggle between good and evil within Snape. His love for Lily was a force for good, but his association with the Death Eaters was a mark of evil. Fanfiction can explore how this internal struggle was affected by his relationship with Lily.
One common theme is identity. Since she is the daughter of two such important and complex figures, she often struggles to figure out who she is. Another theme is legacy. She has to deal with the legacies of both Snape and Lily, which can be both a burden and a source of strength.
Severus Snape x Lily Evans fanfiction often reimagines the 'what - ifs' in their relationship. For example, some fanfictions might depict a scenario where Lily actually reciprocated Snape's feelings. This would completely change the course of the Harry Potter story as we know it. It allows fans to explore different character dynamics and how their relationship could have affected the wizarding world at large. The fanfiction gives a chance to develop their relationship in ways that the original series didn't fully explore due to the tragic nature of their story.
One great Lily Evans and Severus Snape fanfiction is 'The Prince's Tale Reimagined'. It delves deeper into their relationship, exploring the moments that led to their friendship's fracture. Another one is 'Lily's Perspective'. This fanfic gives readers a chance to see the events from Lily's point of view, which is really interesting as it shows how she might have felt about Severus at different stages of their lives. There's also 'Severus and Lily: Lost Moments' which focuses on the forgotten or overlooked interactions between them.
There's also 'Shadows of the Past'. This one focuses more on the daughter's relationship with the other characters who knew her parents. She has to face the prejudices some have towards her because of her father, while also trying to uphold the good name of her mother. The plot is full of twists and turns that keep you hooked from start to finish.
Some fanfictions focus on the friendship between Severus Snape and Lily Potter. They might explore how their relationship started as friends in Hogwarts, how they shared secrets and spells, and how that friendship was slowly complicated by Snape's growing feelings and his association with the wrong crowd. There are also fanfictions that deal with the afterlife. Given the tragic end of Lily, some stories imagine a scenario where Snape meets her again in the afterlife and they are finally able to have an honest conversation about their feelings and the events that transpired.
There's a fanfiction called 'A Different Ending for Lily and Snape'. In this story, it explores what could have happened if Lily had chosen Snape instead of James. It rewrites parts of the Harry Potter canon in an interesting way. Also, 'The Bond Between Lily and Snape' focuses on the magical bond that might have secretly existed between them, a bond that was stronger than just friendship but was complicated by Snape's involvement with the Dark Arts.
One great fanfiction could be 'The Second Chance'. In this story, Severus Snape and Lily Evans are brought back to life by a powerful magical spell gone wrong. They have to navigate the new world which has changed a lot since their deaths. Snape is still as brooding as ever but with Lily alive, he has a new purpose to protect her again.