It's hard to say for sure. Kingdom Hearts 3 could be the end of Sora's story in this particular arc, but the series is known for its complex and evolving narrative, so there might be more to come in the future.
Sora is a young boy who lives on Destiny Islands. He is chosen by the Keyblade, a powerful weapon. Along with his friends Riku and Kairi, his journey begins when their world is invaded by the Heartless. Sora travels through various Disney - inspired worlds, fighting the Heartless and making new friends. He is on a quest to find his lost friends and restore the balance between light and dark.
One of the most significant events is the fall of Destiny Islands. This is what sets Sora on his journey. Then, his encounter with the Keyblade is key as it gives him the power to fight the Heartless. Meeting new friends like Ariel in Atlantica is also important as it shows his ability to form alliances. And his final confrontation with Xehanort is a major event that decides the fate of many worlds.
Well, it depends on how you look at it. Technically, in official Kingdom Hearts content, Sora is a key character. But in the realm of fanfiction, many writers take the essence of Sora and create their own unique stories that are not part of the official canon but are still inspired by the Kingdom Hearts universe. So, in that sense, he can be considered as a major element in Kingdom Hearts fanfiction.
I'm not entirely sure as I haven't read every detail of it. But generally, it likely involves Sora's adventures in the Kingdom Hearts universe, with battles against the forces of darkness and his journey to protect the different worlds.
Sora's real story in Kingdom Hearts is an epic tale. It begins with him living a normal life on his island until the Heartless attack. His Keyblade - wielding abilities set him on a path of discovery. He travels through worlds like Wonderland, Olympus Coliseum, etc. His relationships with other characters are crucial. For example, his friendship with Riku is tested as Riku is sometimes tempted by the dark side. Sora must constantly strive to become stronger, both physically and mentally, to overcome the challenges in his journey to save the worlds and the people he loves.
The significance is that it likely wraps up Sora's journey in the Kingdom Hearts 3 saga. It could be about his final battles, his growth as a character, and how his relationships with other characters reach a conclusion.
In Kingdom Hearts fanfiction about Sora's time travel, one common scenario is Sora going back to key moments in the series' history. This could be to prevent certain tragedies, like the fall of a particular world. He might use his Keyblade's power in new and unexpected ways during these time - traveling adventures.
One idea for fanfiction could be that Sora's mom left behind a hidden message or a special power for Sora. This power could be something that only awakens when Sora faces his greatest challenges. It could be a form of protection or a key to unlocking an even greater power within him.
Sora's story in the end of Kingdom Hearts 3 is quite complex. He goes through a series of final battles and sacrifices. He has to face powerful enemies to save his friends and the different worlds. In the end, he makes a great sacrifice which shows his selfless nature.