I'm not sure specifically as I haven't read it. But generally, fan fiction about lions might involve their adventures, relationships within the pride, or perhaps some fictional scenarios where they interact with other elements in their environment.
One common theme is power. The sixth lion often brings a new level of power to the Voltron team. Another theme is unity. It shows how the team has to adapt and become more united with the addition of the sixth lion.
Sure. One popular sixth lion Voltron fan fiction is 'The Sixth Lion's Legacy'. It delves into the discovery of a hidden, powerful sixth lion and how it changes the dynamic of the Voltron team. Another great one could be 'Sixth Lion: A New Beginning' which focuses on the training and integration of the new lion into the group.
It could also be a character within the pride who is jealous of Kovu's special connection to Scar (even if it's an unwanted connection). This character might spread rumors and try to turn the other lions against Kovu, creating a lot of internal conflict within the pride and making that character the main source of trouble for Kovu in the fan fiction.
One idea could be to explore what would happen if Simba had a different mentor other than Rafiki. Maybe a new character who teaches him some unique skills. Another idea is to write about the backstory of Scar, like his early days in the pride and what led him to become so power - hungry. Also, you could create a fan fiction where Nala has a more prominent role in saving the pride, not just following Simba but leading in her own way.
Another way is through conflict resolution. Let's say there are disputes between the Outsiders and the Pride Lands lions. Vitani and Kiara, as representatives of their respective groups, could work towards finding solutions. In this process, they will understand each other better and their relationship will grow. They might start by arguing a lot, but as they see the other's point of view, they become closer. This could involve many detailed conversations and compromises. For instance, they might have to decide how to divide resources fairly between the two groups. Through these discussions and the effort to reach a consensus, their relationship will develop into a strong and respectful one.
One idea could be that Vitani and Kiara team up to protect the Pride Lands from a new threat, like a group of rogue lions from a far - off land. They start off distrusting each other but gradually learn to work together and become friends.