shipcest

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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:

Week 1 Suggested Character: Big Sister

1. Handcuffs 2. Licking 3. Doppelgänger 4. Ropes 5. Over-Stimulation 6. Virgin 7. Humiliation

Week 2 Suggested Character: Daddy

8. Body Hair Kink 9. Fleshlight 10. See-Through/X-Ray Vision 11. Clothed Sex 12. Power Exchange 13. Sweat 14. Massage

Week 3 Suggested Character: Little Brother

15. Size Kink 16. Body Worship 17. Mind Control 18. Felching 19. Chastity play 20. Masturbating Together 21. Coming in Pants

Week 4 Suggested Character: Mommy

22. Tit-Fucking 23. Bites & Bruises 24. Helpless 25. Face-Sitting 26. Dry Humping 27. Body Shots 28. Breath Play

Week 5 Suggested Character: Uncle

29. Come Play 30. Strip Club

Rules

1. All works need to include incest, but every fandom is welcome! Original works are also welcome. 2. Relationships can include more than just the incest pairing, but the incest pairing must feature. 3. NSFW, Dead Dove and dark content is welcome, but please tag them accordingly. 4. No AI or LLM (Large Language Model) works allowed. 5. If posting your work on Tumblr, please tag @macrocest and include: - the name of the prompt - a note of any nsfw content or triggers (somnophilia, underage, etc.)

This might look like:

@macrocest Prompt: Getting caught Dean/Sam | 6.5k words Warning: nsfw, gore It wasn’t supposed to have happened this way…

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Shipcest thought

that thing from fairytales and myths where the dude comes back from a long long trip and finds his wife with what he assumes to be her new lover but it's actually their son bc he left her pregnant/with an infant except mother and son *are* actually lovers

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Brosis couple

Parent x child couple

Twincest couple

I see no difference, incest is wincest.

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incest

incest

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🙂‍↕️

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Microcest prompt no. 055 - Do you want more?

Wednesday, April 16th, 2025

Microcest: multifandom incest microfic prompts.

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There's a scene in corpse party that rewired my brain chemistry that I need to share for all the dark incest lovers

Guy and Girl escape haunted murder school, Guy's sister was killed during their time there. Guy and Girl seem like they are gonna end up together, but when Guy gets home, he starts hearing the ghost of his sister, urging him to come with her, to basically die so they can be together again. Guy, of course, agrees. Anything for his sister, anything at all.

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"I know the word 'love.' My brother taught it to me."

The Carnivorous Lamb, Agustín Gómez-Arcos

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"they're mine, they were literally made for me" older sibling 🤝🏻 "they loved me first and now no other love feels right" younger sibling

there is no meme, they're just holding hands. they're in love (and doomed)

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made a shipcest bingo for anyone to fill out!!! you can use it for specific ships or for just general tropes/scenarios/etc that you enjoy 💕

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Proship/comship/darkship shipping-centered ask game for you and all your followers to play because there's not nearly enough of them in the world 👍🏻 (by the way the ship and character questions, unless it's talking about fandom specifically, includes OCs and your selfships if you want it to! There are also some OC and selfship specific questions)

❤️: What's your favorite ship ("taboo" or not) of all time? (If you can't think of one, then just go with your current most favorite)

🧡: What is the first taboo ship you *remember* having?

💛: What's your newest taboo ship?

💚: What's the taboo ship you've been into consistently for the longest amount of time? (Doesn't have to be your first one ever)

💙: What's your favorite dynamic (age gap, toxic relationship, different species, incest) in general?

💜: If you like incest pairings, what's your favorite dynamic specifically? (Parent/child, sibling/sibling, grandparent/grandchild, you get the idea)

🤎: If you like toxic relationship dynamics, in what kind of way is your favorite? (Manipulation, blackmailing, gaslighting, psychical, emotional, financial, or psychological abuse, etc)

🖤: What's the most dark/disturbing ship overall (what defines this varies from person to person so just go with what you think) that you like?

🤍: What's the most fluffy/wholesome/pure ship overall (whether or not it has taboo elements) that you like?

❕️: What's a ship dynamic *and/or* (you don't have to answer both) a specific pairing you expected yourself to like, but you just don't?

❔️: What's a ship dynamic *and/or* (you don't have to answer both) a specific pairing you didn't expect yourself to like, but for some reason you really do?

🌻: What's a pairing with a *purely platonic* (not romantic, not sexual) relationship you like?

🌵: What's a pairing with a *purely romantic* (not platonic, not sexual) relationship you like?

🌹: What's a pairing with a *purely sexual* (not platonic, not romantic) relationship you like?

☀️: What's your favorite pairing featuring a human x non-human partner?

✨️: What's your favorite pairing that includes more than two partners? (Polyamorous and/or polygamous relationships)

🌙: If you selfship, what is your favorite dynamic to do with you/your self insert and your F/O(S)?

🪐: What's the "weirdest" ship (crackships, crossovers, just ones that make no sense) you unironically like?

🌌: If you like interspecies relationships, what kind is your favorite? (Human x monster, human x alien, etc. Applies to any species, doesn't have to include humans)

🔪: What's, at least by comparison to your other ships, by far the most popular ship you like (in fandom)?

🗡: What's, at least by comparison to your other ships, by far the least popular ship you like (in fandom)?

⚓️: What's a ship dynamic that's really popular but you could never get into? (Do not use this as an excuse to bash others, just share your own personal opinion.)

📰: What's a ship dynamic/concept (get as specific as you want) that's really unpopular or entirely unknown, that you wished people talked about more?

🚬: What's a taboo ship you disliked initially, but you grew to love for whatever reason?

⚰️: What's a taboo ship you loved initially, but you grew to dislike for whatever reason?

🍷: What's the pairing you like that features the largest age gap out of any of your other age gap ships?

🎭: What's a ship you like/liked that is/was clearly problematic (or just not up to anti standards), but because it was popular and well liked in that fandom, no one ever came at you for?

🎯: If you selfship, who was your first F/O?

☎️: If you selfship, who is your newest F/O?

🎪: If you selfship, what was your first introduction to the concept of it that you remember?

🎱: If you have OCs and ship them together, which pairing between them is your favorite?

🎲: If you have OCs and ship them together, what is your favorite dynamic to do with your characters?

🌸: What was your first introduction to "problematic" ships that you remember?

🌷: What's your favorite rarepair overall?

🎀: If you like lolis, what's your favorite loli character? (What constitutes as a loli can be defined by you)

🧸: If you like shotas, what's your favorite shota character? (What constitutes as a shota can be defined by you)

👑: If you like kodos, (gender neutral/non-binary version of lolis and shotas) what's your favorite kodo character? (What constitutes as a kodo can be defined by you)

♂️♂️: What's your favorite taboo gay ship overall?

♂️♀️: What's your favorite taboo straight ship overall?

♀️♀️: What's your favorite taboo lesbian ship overall?

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I think we, as a society, need more media in which the siblings end up together

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Ooops

John arrived before any of them expected.

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I just think that