Are you ready for CESTEMBER 2025!?!?
Cestember is a month-long multifandom incest event with daily prompts hosted by Macrocest in September.
This is our second year hosting this event and we are even more excited than last year because of all our new friends!! (Though we are still really proud of last year's prompts and works!)
For this year we have our daily prompts of course; but, we want to change things up a little bit each year to keep it interesting, so this year instead of suggested pairings we have suggested characters. For example, week one, day three we have the suggested character “big sister” and the prompt “Doppelgänger,” so you might write a fic that involves two Elsas—to Anna’s amazement—or, two Annas—to Elsa’s horror. The suggested character could be a large or small part of the scene, it’s up to you.
Remember these are suggestions, not requirements. Feel free to ignore them completely. They are merely to inspire you to branch out and try a new pairing or possibly return to an old favorite. Our AO3 Collection is up-to-date and has tons of new FAQs that might be helpful to you! For example, we specifically state that you do not need to post your work on AO3 (or at all!) to participate. And “imagines” (aka nonspecific little brother x big sister Tumblr-type stories) are now explicitly allowed, as well as rpf, reader-insert, and extremely taboo works. These were always allowed but now it says it loud and clear! (Fluff is absolutely allowed too btw!)
Prompts and Rules are below as well as on AO3:
