In a possible fanfiction plot, perhaps Harry discovers a magical spell that allows him to 'ride' Snape in a sense of using Snape's magic or knowledge for a quest. Maybe it's a situation where Snape is under a spell himself and Harry has to control him like a steed to reach a hidden place in Hogwarts to find a powerful artifact that can save the wizarding world.
One idea could be that it's part of a dream sequence. Harry, while in a deep sleep, has a strange dream where he rides on Snape's back as they fly through the halls of Hogwarts. This dream could be a sign of his subconscious trying to understand Snape better, as Snape has always been a mysterious and complex figure in his life. In the dream, Snape might be taking Harry to a place where he can learn a crucial secret about his past or his destiny.
Well, it could be a comical fanfiction where Harry accidentally casts a wrong spell during a duel with Snape. Instead of harming Snape, the spell makes Snape's body act like a magical vehicle. Harry, in a panic at first, then realizes he can use this situation to his advantage. He rides Snape around Hogwarts to avoid other threats, like a group of Death Eaters who have infiltrated the school. Along the way, they have a series of misadventures and Snape is constantly grumbling and trying to break the spell.
I'm not sure if there's a super - popular one specifically about Harry riding Snape. Fanfiction is a vast world and while there might be some out there with this concept, it's not as common as some other themes. However, in the general realm of Harry Potter fanfiction, there are so many creative and unique stories that it's possible someone has written such a thing.
One possible plot could be that after the war, both Harry and Snape realize they have a deeper understanding of each other. They start to communicate more, initially about the events that transpired. As they talk, they find common ground in their experiences of loss and loneliness. Slowly, feelings develop, and they decide to give a relationship a try. Eventually, they get married in a small, private ceremony attended only by their closest friends who have come to accept their relationship.
In this fanfiction, the story could start with Harry finding Snape in a very vulnerable state after the Battle of Hogwarts. Harry feels a deep sense of guilt for how Snape was treated throughout his life. So he decides to adopt him. At first, their relationship is awkward. Snape is still his old sarcastic self, but Harry is determined. As time passes, they discover they have a lot in common. They both lost their parents at a young age, and they both had to face great challenges. This newfound understanding leads to a transformation in their relationship. Harry helps Snape to come out of his shell of bitterness, and Snape teaches Harry more about the Dark Arts in a controlled and ethical way so that Harry can better protect the wizarding world in the future.
The plot could involve a Veela who is seeking revenge on Hogwarts for an old wrong. She targets Harry Potter as he is the famous Boy Who Lived, thinking that by getting to him she can get the attention of the wizarding world. Severus Snape, being the ever - vigilant professor, senses something is wrong. He starts to investigate and discovers the Veela's plan. As he tries to protect Harry, he also uncovers some secrets about his own past that are related to the Veela. Along the way, Harry and Snape have to put aside their differences and work together to stop the Veela's vengeful plot.
The plot could involve Snape collaring Harry as a form of punishment for some misbehavior that endangers the wizarding world. But then, as they are forced to interact more because of the collar, they start to understand each other better. For example, Harry might learn about Snape's past and his true loyalties.
If Snape raised Harry, Harry would likely become a much more skilled potions master at an earlier age. Snape's knowledge and strict teaching methods would push Harry to excel in that area.
One possible plot could be that they discover their relation early on. Harry, instead of being alone, has an older brother figure in Snape. Snape might then be more protective of Harry from the start and try to shield him from the dangers at Hogwarts in a more direct way.
It would be extremely complex. Harry might initially be in disbelief and struggle to accept Snape as his father. Snape, on the other hand, would probably be very strict but also deeply protective in his own way.
A lot of fanfic writers will create unique storylines for Snape's courtship. They might introduce an original character who manages to break through Snape's tough exterior. His courtship would then involve him struggling with his own insecurities and his reputation. This character might see the good in him that others overlook. There could be moments of tension and misunderstanding, but also deep, meaningful conversations as they get to know each other better.
Often in fanfiction, the ring can be a plot device. It could be that Harry Potter unknowingly has a connection to the ring, and Severus Snape has to keep it from falling into the wrong hands. This creates a situation where Snape has to protect both Harry and the ring, leading to some tense and interesting storylines.