In a way, it could be seen as appropriate if the aim is to create a deeper understanding of the connections between different historical events. The fanfiction could potentially show how the aftermath of WW1 led to the conditions that made the Holocaust possible. However, some might argue it's inappropriate because it might seem to trivialize the Holocaust by mixing it with a fictional concept like time - travel and a personified WW1.
Well, self - discovery is also a common theme. When characters travel through time, they often learn more about themselves and their place in the world. They might see how their past actions led to the present situation. And then there's the theme of fate. Some fanfics explore whether time travel can actually change fate or if everything is already set in stone no matter what they do in the past.
Naruto is often a very popular character in 'Naruto timetravel fanfic'. His growth throughout the original series makes him a great candidate for time - traveling. Fans like to see how he would use his new - found knowledge and skills from the future in the past. Another popular one is Sasuke. His complex backstory and powerful abilities make for interesting time - travel scenarios.
There are 'Naruto timetravel fanfic' where characters like Kakashi time - travel. In some of these, Kakashi goes back to his childhood days and tries to save his friends in a different way. He might use his knowledge of jutsu and strategies from the future to make a big impact on the past. Also, some fanfics have Hinata time - traveling and changing the way she interacts with Naruto in the past, which could lead to a whole new set of relationships in the story.
Well, some RWBY timetravel fanfictions use advanced technology for time travel. There could be a mad scientist - type character who creates a time - travel device. This device might be a large, elaborate machine that the characters step into and are then transported through time. Also, in certain fanfictions, there are time - related Grimm. These Grimm have the ability to distort time around them, and if the characters get too close or are affected by their powers, they end up traveling through time.
One interesting concept could be how the characters' relationships change due to time travel. For example, Sebastian might have to adapt to a different era's social norms while still serving Ciel, which could add new layers to their dynamic. Another concept could be the alteration of the plot. If Ciel travels back in time, he could potentially prevent certain tragedies from occurring in his family's past, completely changing the story's trajectory.
A great RWBY time - travel fanfic is 'Time - Shifted'. It takes a unique approach to time travel, with the characters not only traveling through time but also having to deal with the consequences of their actions in different timelines. For example, when they change something in the past, it creates a ripple effect that alters the present and future in really interesting ways. Another interesting one is 'Time Travelers of Remnant' where the time - travelers have to team up with their past selves to save Remnant from a time - related disaster.
It's a really strange concept. If WW1 (I assume it's World War 1 personified in some way here) were to read Holocaust time - travel fanfiction, it might gain a new perspective on the horror and scale of the Holocaust. It could perhaps see how events in its own time might have contributed to the lead - up to the Holocaust in some alternate view presented in the fanfiction.
One common theme is redemption. Characters often go back in time to right their past wrongs or prevent disasters. For example, they might try to stop a character from making a bad decision that led to a lot of chaos in the original timeline.
Ciel is a likely candidate. Given his intelligence and determination to avenge his family and protect his future, he might see time travel as a means to change certain events in the past. He could use it to find out more about the people who wronged his family and stop them before they act.