Cestember 2026 begins next month!
Cestember is a month-long multifandom incest event with daily prompts hosted by @macrocest in September.
Basic Premise: There is one prompt each day of September. You can choose to fill any number of the prompts or all of them.
Optional Weekly Theme: 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 we have suggested relationship themes for each week.
For example, September 29th we have the suggested theme “unwitting incest” and the prompt “portals.” This could be used in a work where there is a portal glory hole where neither person knows who is on the other side. The suggested theme could be a large or small part of the work, 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 dynamic or possibly return to an old pairing.)
Week 1 Suggested Theme: Secret Incest
01. Pool Sex 02. Strange Biology 03. Public Fingering 04. Pain Play 05. Jock Strap 06. Milked
Week 2 Suggested Theme: Romantic Incest
07. Dancing 08. Openly Flirting 09. Sneaking Around At Family Gatherings 10. Conditioning 11. Free Use 12. Vibrator 13. Omegaverse
Week 3 Suggested Theme: Angsty Incest
14. Human Furniture 15. Post-Orgasm Clarity 16. Adoption 17. Outdoor Sex 18. Succubus/ Incubus 19. Under-Negotiated Kink 20. Magical Healing Cock/Pussy
Week 4 Suggested Theme: Accidental Incest
21. Ruined Orgasm 22. Oral Sex 23. Wish Goes Wrong 24. High Heels 25. Kink Discovery 26. Pet Play 27. Hypnosis
Week 5 Suggested Theme: Unwitting Incest
28. Drunk Kiss 29. Portals 30. Anonymous
See our 2026 AO3 page for all our rules (e.g. no AI) and FAQs.
You could also read works from our previous years from our parent Cestember collection.
