Well, perhaps a major plot twist is that Ryan was secretly raised by the Dark side. So when he meets Harry, he has conflicting loyalties. He might initially be used as a tool against Harry but then realizes his true family bond. Also, it could be that Ryan has a unique connection to the magical artifacts in the wizarding world that no one knew about, which could change the power dynamics in the story.
A really interesting plot twist could be that Ryan was switched at birth not just with Harry, but with another important character. This would create a whole web of confusion and mystery. Maybe he has a prophecy attached to him that was misinterpreted because of the switch. And as he and Harry get to know each other, they start to uncover secrets about their family and the wizarding world that were long forgotten.
One possible plot twist could be that Ryan was thought to be dead but actually was hidden away by some powerful magic. This could lead to a situation where he suddenly reappears and has to adjust to the wizarding world while also dealing with his new - found relationship with Harry. Another twist could be that Ryan has different magical abilities compared to Harry, which causes envy or admiration among the wizarding community.
Their relationship could start off rocky as they are strangers at first. But as they discover their shared past and experiences, they might become closer. They could support each other through the challenges of the wizarding world, like dealing with bullies at Hogwarts or facing dark wizards.
Ryan could be more adventurous than Harry. Maybe he's always the one to take risks first, dragging Harry along on his escapades. This trait could lead him to explore areas of the wizarding world that are off - limits or dangerous, which in a WBWL scenario could have major consequences for the story.
One interesting plot twist could be that the forgotten twin has a different magical ability than Harry. For example, while Harry is good at Defense Against the Dark Arts, the twin might be a natural at Potions or Charms. This could lead to a situation where the twin is initially seen as an outcast in Hogwarts because their skills don't match the typical Gryffindor traits. Another plot twist could be that the forgotten twin was actually hidden away by a powerful dark wizard who planned to use the twin's power for their own evil purposes. This would put the twin in a difficult position when they discover their true past and have to decide whether to side with the forces of good or be influenced by the dark wizard's plans.
I would recommend 'The Twin Beyond Memory'. In this story, the forgotten twin has amnesia and doesn't remember their true identity. They grow up in a muggle orphanage until their magic starts to show. Eventually, they find their way to Hogwarts. The unique part is that their amnesia is caused by a powerful dark magic spell. As Harry and Hermione try to help their twin regain their memories, they uncover a conspiracy within the wizarding world that dates back to their parents' time.
One popular 'Harry Forgotten Wbwl' fanfic is 'The Lost Heir'. It has an interesting plot where Harry discovers a whole new side of his family heritage that was hidden from him. Another one could be 'Forgotten No More' which focuses on how Harry deals with the realization that he was forgotten in the events of Wbwl. And 'Rebirth of a Forgotten Boy' is also great as it shows Harry's journey to reclaim his place in the wizarding world after being overlooked in the past.
Well, FanFiction.net is a great place to start. It has been around for a long time and has a vast database of fanfics. Just type in 'Harry Forgotten Wbwl' in the search box, and you'll get a list of relevant fanfics. Another option is AO3. It's known for its wide variety of fan - created content, and it's also very user - friendly. You can easily navigate through the search results for the 'Harry Forgotten Wbwl' fanfics. Additionally, some Harry Potter - focused fanfic communities might also have their own collections or recommendations for these types of fanfics.
One interesting plot twist could be that Hermione and Harry discover their relation much later in their Hogwarts years. Maybe they've always had a special bond but just attributed it to their friendship. Another could be that their shared heritage gives them unique magical abilities that no one else has, like a combined spell -casting power that can defeat the darkest of dark wizards.
One interesting plot twist could be that they discover their twin bond gives them shared magical abilities that are unique. For example, they might be able to combine their powers to create a new kind of spell.
One possible plot twist could be that the secret twin has been living in the Muggle world all this time. When Draco discovers his twin, he has to navigate the challenges of introducing a Muggle - raised sibling into the wizarding world. This could cause a stir in the Malfoy family, as they have strong pure - blood beliefs.
One plot twist could be that they were separated at birth due to some prophecy. The prophecy might have foretold that if they were together, they would either bring great destruction or great salvation. So, the gods or some powerful force made sure they were separated. Another twist could be that their different upbringings have made them enemies unknowingly. Percy growing up with his mother and at Camp Half - Blood, and Clarisse at Ares' cabin. When they find out they're twins, they have to overcome their pre - existing grudges.