Well, a cool plot could involve Shiro and the Black Lion getting separated. Shiro then has to go on a quest to find the Black Lion while facing various challenges. Along the way, he meets new allies who help him in his search. And when he finally reunites with the Black Lion, they are stronger than ever and can defeat a powerful villain that has been causing trouble in their universe. It could also be interesting if there's a sub - plot about the history of the Black Lion that Shiro uncovers during his journey.
There are several characters that could enhance the 'Shiro and the Black Lion fanfiction'. Kolivan, the leader of the Blade of Marmora, could be added. His experience and skills could be valuable in a mission related to the Black Lion. Narti could also be an interesting addition. Her ability to see through the eyes of others could provide a unique perspective in the story. And Romelle, with her knowledge of the Altean colony, might bring new information that is crucial for Shiro and the Black Lion's journey.
Another interesting plot could be that Harry's transformation into a Black Lion is a sign that he has a deeper connection to Salazar Slytherin than anyone thought. It turns out that Slytherin had an affinity for lions in a different way than Gryffindors. This discovery causes a stir in the wizarding world, and Harry has to deal with both the prejudice and the new opportunities that come with this revelation. He could use his newfound connection to Slytherin's legacy to bring together the houses in a way that has never been done before in the fight against the Dark Lord.
One idea could be exploring what would happen if Simba had a long - lost sibling. Another could be a story where Scar had a change of heart before his final battle with Simba. Maybe a fanfiction about the animals in the Pride Lands having to deal with a new, unknown threat that even Mufasa didn't foresee.
One idea could be a human character getting lost in the Pride Lands and having to learn the ways of the animals to survive. They could form an unlikely bond with a member of the Lion Guard.
One idea could be a story where the Lion Guard has to face a new and mysterious threat in a lemon - filled jungle. Maybe there's a villain who is using the lemons to create some sort of chaos, like making traps out of lemon juice that can paralyze the animals. The Lion Guard then has to figure out how to overcome this unique threat using their individual skills.
One idea could be a human prince who is exiled from his kingdom, just like Simba. He has to grow up in a different place, learn about himself and his true purpose, and then return to claim his throne. Another could be a love story set in the 'Lion King' human - version world, perhaps between two characters from different social classes or rival families.
Well, a cool plot for this fanfiction could be that Simba and Nala get transported to a different land, maybe by some kind of magic. In this new land, they have to learn new ways to survive and communicate. They meet different animals with different cultures. This experience makes them grow as individuals and as a couple. Another idea is that there's a drought in the Pride Lands and they have to figure out how to find water. They split up to search in different directions and both face their own challenges during the search. It could be a story full of adventure and self - discovery.
One idea could be that a human child gets lost in the Pride Lands and is adopted by a lioness. The child grows up learning the ways of the lions, facing the same challenges as Simba did, like dealing with Scar's evil plans. Another could be that the human child has a special power, like being able to communicate with all animals in the Pride Lands, and uses it to bring peace between the lions and other species. Or perhaps the human child is a descendant of an ancient tribe that has a connection to the Pride Lands and must fulfill a prophecy to save the kingdom.
Another plot could involve a human who has a deep knowledge of ancient Pride Lands lore. The Lion Guard discovers the human while on a quest to solve a mystery that is endangering their home. The human helps them decipher old symbols and tales, leading to the discovery of a powerful weapon or magic that can save the Pride Lands.
One idea could be a human who has the ability to communicate with animals arrives in the Pridelands. They help Simba solve a new and mysterious threat that the lions can't fully understand on their own.