Perhaps there's a plot where the wizarding community reacts to Harry's parentage. Some might fear him because of Tom's dark past, while others see potential in the intelligence and skills he could have inherited from Severus. This could lead to a lot of political and social intrigue within the story.
One possible plot idea could be Harry growing up with a conflicted identity. Since Tom is often associated with dark magic and Severus has his own complex past, Harry might struggle to come to terms with his heritage. He could be shunned by some in the wizarding world who fear his connection to Tom.
There's 'A New Destiny'. This fanfic explores how Harry, as the son of Tom and Severus, has to navigate the complex wizarding society. It shows his struggles with the expectations and prejudices that come with his heritage, and how he tries to find his own place in the wizarding world.
The fanfic might reimagine Harry as a character who is constantly at odds with himself. He has the potential for great power from Tom, but also the emotional depth and loyalty from Severus. This internal struggle could be a major part of his character arc, as he tries to figure out who he really is and how to use his abilities for good, despite the dark shadows of his parentage.
One interesting plot could be Severus initially struggling to connect with Harry due to their past differences. But as he gets to know the extent of Harry's abuse, he becomes fiercely protective. He starts teaching Harry advanced magic privately, which helps Harry grow both in confidence and power.
Another plot could involve Severus training Harry to be a better Occlumens. As Harry delves deeper into this art, he uncovers some of his own hidden memories and emotions. This could lead to a better understanding between Harry and Severus as they share their experiences with mind - protecting magic. It also might put Harry in a position where he can better defend himself against Voldemort's attempts to invade his mind.
A possible plot could also be Harry's relationship with his friends in this new context. They might be initially scared or confused by his new identity. However, through their friendship, they come to accept and support him. Hermione could use her vast knowledge to help Harry understand his powers better, while Ron could provide the emotional support and loyalty that he always has.
Well, one interesting plot could be Harry seeing Severus in a new light. He realizes that Severus was actually a complex and misunderstood character. So, he decides to adopt him to give him a new start in life. Another plot might involve Severus initially being resistant to the idea of being adopted by Harry, but over time, he warms up to the concept as he sees Harry's genuine kindness.
One interesting plot could be Severus having to deal with Harry's fame at Hogwarts while trying to keep their new family relationship a secret. It adds a layer of mystery and tension.
Well, in some fanfictions, a great plot is their relationship with their Hogwarts houses. For example, if Harry is in Gryffindor and Tom in Slytherin, there could be a lot of tension and yet also a deep bond that forms as they try to understand each other's values and motives within their respective houses.
Tom might be a distant and somewhat menacing figure. He could have his own motives for having a son with Severus, perhaps related to some grand plan for power. Harry might be in awe of Tom's power but also afraid of his dark side.