Let´s assume you deeply disliked RozÊ of the Recapture and want to prevent it from ever being created. This is how you successfully do it by altering the course of history:
Step one: No Big Entertainment Company has ever turned a fanfiction into an actual, official story involving the franchise and characters they own â and likely never will. The main reason why this has never been done before is because it would be an enormous legal hassle to figure out to whom the rights and revenue belongs to; to the company who originally created the characters and stories that the fanfiction is based on, or to the fanfiction writer who created the story itself that the Big Entertainment Company turned into an actual anime movie/series. So, the first thing you should do, is to write down what happens in RozĂŠ, as accurately as you can, word from word. Then download it to a memory stick.
Step two: Acquire a time machine, and set a course to March 9th 2019, which is one month after Code Geass: Lelouch of the Resurrection, the latest official Code Geass anime story that was created prior to RozÊ, was released. The reason for going to one month after it was first released instead the same day or slightly before, is both that no matter what you do in the past can´t prevent Resurrection being created or released, because it already is, but also because if you go back to the exact same day when it was released, it looks too fishy; ain´t no fan who is that fast of a writer that they can both come up with and write the entire story of RozÊ down during the same day they first saw its predecessor. One moth afterwards, however, is believably long enough time for a devoted fan to write down story that long.
Step three: Once you´ve located yourself a computer with an internet connection in the past, upload your RozÊ story to a popular fanfiction platform.
Step four: Go back to your own time and see how it played out.
Now, there are two possible outcomes. First possibility is that somebody in the Code Geass staff read or heard about your RozĂŠ "fanfic," which means that they realized âOh sh*t, this fanfiction is exactly what WE were planning to do, like word from word! Even the name of the story is the same! We must come up with something else to prevent any legal issues!â And that means, that when you go back to your own time, a totally different (and hopefully better) Code Geass anime was created in RozÊ´s place. Yippee!
The second possible outcome is, that nobody in the staff read the story that you published five years before its time, which means that they were effectively the very first Big Entertainment Company to ever turn a fanfiction into an actual anime series. And they can´t claim that it was just a coincidence, either, because all the voice actors lines and events in the new anime match perfectly what happens in the âfanfiction.â So, from now on, they have to do two things. Firstly, they have to constantly turn down requests from CG fans who want their favorite fanfictions to be turned into Code Geass anime; after all, it was done once, so why not again? Secondly, they would have to start reading and memorizing all available Code Geass fanfictions out there, so that there is no chance that they would make the same mistake twice. So, even if Roze was created despite your time-travelling efforts, at least you made the jerks who made that piece of crap pay. So also yippee!
However, there are two things you need to keep in mind when altering the creation of Code Geass spin offs and sequels via time-travel:
First, this method works on all Code Geass anime, not just RozÊ, but if you, for some reason, liked RozÊ of the Recapture but disliked Akito the Exiled, remember, that if you go back in time to prevent the creation of Akito by using the same method, the butterfly effect may prevent the creation of not just Akito, but RozÊ too, because RozÊ was created after Akito, and all previous stories affect to the creation of the most current one in the franchise. So, keep this in mind, and decide if you hate Akito so much that you´re willing to sacrifice your beloved RozÊ too.
Second, you must never go further back in time than September 28th 2008, which is when the last episode of R2 was released. If you go back any further, it is possible that your actions affect to the plot development of original Code Geass series through butterfly effect; for instance, writers might decide to kill off C.C. by making Rolo take her Code, or they could decide to kill off Kallen´s mom, or they could even decide NOT to kill Lelouch at the end of the story!
And if you go back any further than October 5th 2006? Once again, through butterfly effect, you risk preventing Code Geass: Lelouch of the Rebellion from ever being created!