It could be a story where the Doctor faces a major threat to the Time Lord race and has to find a way to save them. Maybe there's a powerful enemy or a time-traveling conundrum involved.
One common plotline is exploring what happened in the time between the events of 'Last of the Time Lords' and the next season. It might involve the Doctor's internal struggles and how he copes with the aftermath. Another is the idea of alternate timelines where different decisions were made during that episode.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of Doctor Who - related fanfictions, including ones based on 'Last of the Time Lords'. Just use the search function on the site and type in relevant keywords.
Maybe Naruto discovers that the demon lords are planning to attack Konoha. So, he decides to take the fight to them. He uses his shadow clone jutsu to outnumber the demon lords and then uses his Rasengan or other powerful jutsus to defeat them one by one.
Well, 'For the Last Time' comic has a story centered around a dystopian world where the main characters must make a desperate choice to save humanity. There are lots of twists and turns along the way.
One idea could be exploring the backstory of a minor character in the game. For example, a sidekick of the main protagonist who has their own motives and secrets that tie into the overall lore of the Castlevania Lords of Shadow universe.
One popular plot twist could be a character traveling back in time and accidentally changing a small event that has huge consequences in the future. For example, they might stop a minor character from meeting another, which then changes the entire course of a war. Another could be a time - traveling villain who tries to erase the Avatar from history by going back to the moment of their birth. And sometimes, a character might go back in time to save a loved one, only to find that in doing so, they create a new set of problems that they have to solve.
The plot of 'Manga Dragon Lords' mainly focuses on a group of brave warriors who embark on a perilous journey to confront powerful dragon lords that threaten the peace and existence of their land. There are lots of action, magic, and unexpected twists along the way.
Survival is also key. The common people have to find ways to survive under the rule of these lords. For example, in many such stories, they have to scavenge for food and resources while avoiding the wrath of the powerful. In a more detailed sense, in stories like 'The Road', the father and son are constantly on the run from various threats in a world that has been destroyed, and there are those who have power (like the lords) over the meager resources left. This shows how survival becomes a central theme as people try to exist in the shadow of these powerful entities.
It can vary a lot. Some Doctor Who fanfiction is very time-sensitive, closely tied to specific events or timelines in the show. Others might be more flexible.
In fanfiction, the 'last time' could be a time of celebration. Maybe their guild had achieved a great victory and Erza and Mirajane were part of the celebration. Erza was probably still maintaining her serious demeanor but secretly enjoying the moment, while Mirajane was more openly jubilant, spreading the cheer among the guild members.