cyanspade's FE3H Dimileth Fics Masterpost
I think I ought to make a masterpost for the Dimileth fics I've written. Please let me know right away if there are broken links!
Last updated: June 3, 2026
Oneshots
Sundays with the Devil (E || 8,639 w. || Fantasy AU, Dragon!Byleth, Hunter!Dimitri, Dragon Fucking, Interspecies Sex, Voyeurism, Oviposition, Eggpreg, Strangers to Lovers, Bottom Dimitri Alexandre Blaiddyd) — As the last living heir born to a line of legendary hunters, it was Dimitri’s duty to drink The Fell Star’s blood as part of his initiation ritual, the same way his father did before him. But when he sees what the ritual really is, he doubts himself, his family, and his faith. Not to mention The Fell Star herself.
when your silver is my gold (E || 5,296 w. || Pre-Timeskip, Pining, Sex Work, Masks, Lactation, Multiple Orgasms, Come Eating, Fantasizing) — Following Manuela’s sage advice, Byleth visits The Silver Wing, one of Fódlan’s best pleasure houses, to de-stress. Oddly enough, the escort assigned to her reminds her of someone familiar—someone painfully untouchable… but if just for a night, she could at least play make-believe until the sun rises.
show, never tell (but i know you too well) (E || 7,192 w. || Post-Timeskip, Advice Box, Idiots in Love, Mutual Pining, Semi-Public Sex, Oblivious My Unit | Byleth) — Byleth receives an odd question in the advice box one day. Someone in the army was madly in love to the point of pain, and they needed her advice. Matters of the heart—and the flesh—were far from her realm of expertise, but she tries her best to answer them, as any good former professor should. Meanwhile, Dimitri has been acting strange around her as of late. She wonders why.
Satiate (E || 1,408 w. || Modern AU, Food Play, Nipple Licking, Blow Jobs, Cunnilingus, Ribbons) — Dimitri learns Byleth usually spends St. Cichol’s Day by herself. Determined to make her happy during the holidays, he gives her a present he knows she’ll love. Or, Dimitri wraps himself in a pretty little bow and lets Byleth eat him up.
you made me hate this city (E || 2,614 w. || Post-Azure Moon, Maids, Roleplay, Sex Toys, Anal Sex, Face-Sitting, Bottom Dimitri Alexandre Blaiddyd) — Byleth finally comes to terms with her greed for the one person she is obligated to share with everyone. Thankfully, Dimitri is always more than willing to give himself to her.
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Multichaptered:
At the End of the World (M || Complete || 10,361 w. || Post-CF AU, Angst, Family Drama, Obsession, Unhealthy Coping Mechanisms, Tempest King Dimitri Alexandre Blaiddyd) — After defecting from the Empire, Byleth finds her way to Dimitri’s war council, and later on, his bed. She discovers she’s pregnant with Dimitri’s baby and takes a page from the Jeralt Eisner playbook—she fakes her death and runs away to protect the baby from the threats posed by every side in the war. Years later, Dimitri finds them.
Visitor (E || Complete || 19,544 w. || Modern AU, Eldritch Horror, Psychological Horror, Obsession, Dubious Consent, Monsterfucking, Tentacle Sex, Oviposition, Stockholm Syndrome, Eggpreg, Dead Dove: Do Not Eat, Yandere Dimitri Alexandre Blaiddyd) — After Jeralt’s untimely death, Byleth goes on an impromptu road trip to get away from it all. She arrives in quaint little Fhirdiad and meets Dimitri, the friendly innkeeper at the Blue Lions Bed and Breakfast. Everything is nice and pleasant, but she can’t shake the feeling that there’s something not quite right about Fhirdiad. Or its innkeeper.
we should never have played god (E || Complete || 22,244 w. || Modern AU, Android AU, Android!Dimitri, Sex Robots, Science Fiction, Robot/Human Relationships, Psychological Horror, Obsession, Stalking, Voyeurism, Dubious Consent, Noncon, Non-Consensual Drug Use, Minor Character Death, Dead Dove: Do Not Eat, Yandere Dimitri Alexandre Blaiddyd) — Robotics grad student Byleth finds an abandoned sex android in a junkyard. After repairing him and letting him go free, he opts to stay with her and help her with her research. Though it’s nice having someone around, she wonders if he’s more human than he ought to be. Or, Dimitri discovers what being human means. The secret, he learns, is love—in all its cruel, hungry splendor.
(UPDATED!) Rotten Seeds (E || Ongoing || 106,964 w. || Pre-Canon AU, Time Travel, Royal Tutor!Byleth, Eventual Romance, Eventual Smut, Slow Burn, Age Difference, Unhealthy Relationships, Codependency, Dead Dove: Do Not Eat, Yandere Dimitri Alexandre Blaiddyd) — Consumed by grief over Dimitri’s miserable end at Gronder Field, Byleth musters the last of her power to go back in time to his childhood and prevent the tragedies that befall him all throughout his life. Unbeknownst to her, Dimitri still has a darkness innate to him—only this time, he’s hell-bent on making his beloved tutor Byleth his and his alone.
The Unsung Perks of Stranger Danger (E || Complete || 9,872 w. || Modern AU, Rape/Non-Con, Suicidal Thoughts, Suicide Attempt, Mental Instability, Stalking, Non-Consensual Somnophilia, Unbirth Kink, Dead Dove: Do Not Eat, Yandere Dimitri Alexandre Blaiddyd) — In Byleth’s approximately ten years of experience as a handywoman, none of her clients were like Dimitri Blaiddyd. He was polite, he never caused any trouble, and he tipped really well. There was just something a little off about him, but she couldn’t quite put her finger on it. Oh, well. At least he was easy on the eyes.
Nativity (E || Ongoing || 16,365 w. || Modern AU, Ranch AU, Psychological Horror, Eldritch Horror, Childhood Trauma, Eventual Cannibalism, Unreliable Narrator, Yandere Dimitri Alexandre Blaiddyd) Downtrodden college dropout Byleth inherits Garreg Mach Pastures from her estranged grandmother, Rhea. Byleth hasn’t set foot on the ranch after moving away with her parents fifteen years ago, but Dimitri, the ranch caretaker, is eager to show her the ropes and help her settle in.Life on the ranch is idyllic. Byleth feels a sense of peace she hasn’t felt in so long.Until cracks begin to show in disturbing ways.
thou shalt not covet (E || Complete || 15,000 w. || Post-Azure Moon, Hanahaki Disease, Rape/Non-Con, Pining, Manipulation, Suicide Attempt, Yandere Dimitri Alexandre Blaiddyd) Byleth falls victim to a disease of the worst kind—of heartbreak over a man unable to love her back. As she vomits blood and roses, all Dimitri can do is helplessly watch as she willingly dies a slow death to let her love endure. But one day, he realizes a few things: One, that Byleth need not die for a dead man. Two, that just like anyone else, Dimitri deserved to be selfish, too.
The Quintessential Guide to Equine Care (E || Complete || 7,454 w. || Pre-Timeskip, Pining, Non-Human Genitalia, Size Difference, Sounding, Come Eating, Come Inflation) A mishap with potions gives Dimitri a cock fit for a horse. Byleth, ever the dutiful professor, helps him out with his problem.
lycanthropy and other delusions (E || Complete || 21,009 w. || Modern AU, Pseudo-Incest, Codependency, Unhealthy Relationships, Psychological Horror, Non-Consensual Somnophilia, Mindbreak, Dead Dove: Do Not Eat) After a tragic accident shatters Byleth’s dreams of greener pastures, she wakes up from a seven-year coma to find Dimitri, her foster brother, waiting for her.Dimitri is the perfect caretaker. He’s sweet and patient, always tending to her every need with devotion and an unwavering smile. So when a quiet unease stirs within her—when his touch lingers, when his kindness feels a little too perfect—Byleth ignores it.He just misses her. That’s all.
(NEW!) Hairline Fractures (E || Complete || 12,956 w. || Post-Azure Moon, Mental Health Issues, Unhealthy Coping Mechanisms, Self-Harm, Hallucinations, Suicide Attempt, Grief/Mourning) — There were two versions of Dimitri—the boy and the man. The boy was dead, so she buried him in a box in her mind—to a place she’d forget, hopefully. She and the man wed, they were happy, and all was well. But unbeknownst to her, the boy doesn’t stay buried for long.
(NEW!) Mother, Mother, Have I Boiled the Frog Enough? (E || Complete || 23,175 w. || Modern AU, Female Dimitri Alexandre Blaiddyd, Pseudo-Incest, Self-Harm, Catholic Guilt, Mommy Issues, Grooming) — When Lambert announces his sudden engagement to the elusive Byleth Eisner, Dimitri swallows her discomfort and resolves to be a good daughter, even if it means welcoming a stranger to the family. To her surprise, Byleth is pleasant, and Dimitri starts to see her as the mother she never had. The idea of Byleth being family soon becomes appealing. Until it all goes awry when Dimitri’s affections twist into something perverse.
