Obviously Naruto is one of the main characters. He's usually the one who gets involved with ryujin jakka. There might also be other characters like Sasuke, who could either be an ally or a rival in the story related to this power.
Well, it depends on the specific fanfiction. Some might have really cool plots where Naruto discovers new jutsu related to ryujin jakka. It could involve him using this powerful ability to fight against new and powerful enemies, or perhaps it's about his journey to master this unique form of power.
One common theme is friendship. Just like in the original Harry Potter series, in these fanfictions, Ryujin often forms strong friendships with the characters from the wizarding world. Another theme is the discovery of new magic. Since Ryujin is a new element in the Harry Potter world, his exploration of different magics is often a central part of the stories.
Adding story highlight icons depends on the platform. Commonly, you need to go into the story editing mode, find the icon option, and browse through available choices or upload your preferred ones. It's quite straightforward once you know where to look.
It's not too complicated. You can usually find icon packs online or in design apps. Just download the ones you like and insert them into your story highlights section.
Story icons usually have specific meanings related to the content or themes of the story. They can act as visual cues or symbols to represent certain elements or ideas.