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#3 Size Difference by sinsoftheabyss (horrorsintheunknown)
Fandoms: Kuroshitsuji | Black Butler
07 Oct 2025
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Ciel pushed himself up from the bed, kneeling in front of Sebastian. He realized the cock was nearly the size of his own forearm.
Ciel swallowed nervously, “That won't fit.”
Grell had explained in advance how two men engaged in sexual intercourse. Ciel thought there wouldn't be a problem if he had an adult form but…
Sebastian grinned, eyes glinting dangerously as he cupped Ciel’s face with his hand. “Oh? I'm sure we could figure something out.”
Series
- Part 3 of Sebaciel Kinktober 2025
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La Mort et le Démon chez les Sorciers by Patchoonli_105
Fandoms: Kuroshitsuji | Black Butler, Harry Potter - J. K. Rowling
21 Sep 2025
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Elizabeth, devenue Shinigami, doit infiltrer l'école de Poudlard pour enquêter sur un cas de réincarnation imminente. Cependant une vieille connaissance va venir compliquer les choses...
L'histoire se passe après la saison 2 de Kuroshitsuji/Black Butler et pendant la quatrième année de Harry Potter. Il y a aussi certains élément de Black butler le manga qui n'apparaissent pas dans les deux premières saisons.
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Weiss just wanted to get wood for her fireplace. Instead she's now found out her father is trying to trade away her soul, to a very attractive demon sure, but a demon none the less.
Clearly her best option was to summon a fae to help her find a way out of this contract she didn't know existed.
Surely nothing could go wrong.
Series
- Part 31 of Distorted Mirror
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Harry Potter et les Reliques du Diable by Patchoonli_105
Fandoms: Kuroshitsuji | Black Butler, Harry Potter - J. K. Rowling
13 Sep 2025
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Harry, Ron et Hermione viennent de mettre la main sur le médaillon de Salazar Serpentard au Ministère de la Magie. Ils sont perdus dans la forêt et se mettent en quête de trouver un moyen de détruire l'horcruxe. Pour cela ils partent à la recherche d'une connaissance du professeur Dumbledore qui serait capable de les aider : un certain Comte Phantomhive...
(Se déroule pendant Harry Potter et les Reliques de la Mort et après la fin de Kuroshitsuji II (2010))
(Le titre est temporaire parce que je ne suis vraiment pas doué pour trouver de titre...) -
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Ciel gets his first cycle, and it was worse than he had thought.
Series
- Part 2 of Black Butler
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“That being said, I have one last question for you.”
Sebastian’s lips part ever so slightly in surprise.
“I’m listening.”
“Do you despise me?” Ciel asks.
Sebastian chases his fingers through Ciel’s raven-black hair. Blue eyes meet red.
“Never, my lord.”
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Hysterical and useless by Ravenlee_domi_87
Fandoms: Kuroshitsuji | Black Butler, Black Butler
12 Aug 2025
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Ciel learns how to live as a demon, thinking he has to do this as always. Alone. He doesn't realise he has someone he can share his worries with.
Set after season 2 -
Carried Away by the Current by TokiTokiToki
Fandoms: Kuroshitsuji | Black Butler, 原神 | Genshin Impact (Video Game)
14 Jul 2025
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“My name is Ciel, but from now on you will call me 'master'.”
His name means 'sky', and his eyes are a vast blue abyss. Sebastian thinks that when day comes, Ciel will drown in the blue, but he doesn't know yet that in this place, the sky doesn't exist.
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A dungeon inhabited by monsters: Sebastian falls into the Abyss, where he is picked up by Ciel.
[Russian translation available
HERE] -
Ciel Phantomhive and the Order of the Phoenix by BadBadz
Fandoms: Kuroshitsuji | Black Butler, Harry Potter - J. K. Rowling
04 Jul 2025
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Ciel and Sebastian are back to Hogwarts.
With Voldemort's return, the demons have to join forces with the Order of the Phoenix to fight the Dark Lord. Everyone has their own reasons to fight, some are more personal than others.
Series
- Part 4 of Demon Wizard
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Alois got the last laugh. Ciel Phantomhive is now a demon, cheeky, sharp tongued, and unburdened by humanity. Sebastian is bound to serve him for eternity, unable to savor the soul he worked so long to cultivate. A cursed butler. A bratty young demon. And the ruined ghost of a contract neither of them can truly escape.
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| Anne Drewanz and Grete Hilbert, undercover soldiers, receive orders to kidnap Sieglinde Sullivan.
Disguised as peasant girls, they infiltrate Ciel and Sebastian's hideout. But the deception falters when Anne, caught spying on the child, is discovered by the butler himself.A game of seduction, lies and danger begins.
And the devil--he always knows when you're lying. -
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When Ciel is on the verge of death after getting shot on a mission, Sebastian takes matters into his own hands to ensure Ciel's survival. Without consulting Ciel he turns him into a half demon. Ciel is not amused. Then again, maybe this isn't the worst, maybe Ciel isn't all too angry about it. Maybe he enjoys the new intimacy in their relationship and Sebastian's fascination for Ciel's unique demonicness. And maybe Sebastian will enventually use the words "I love you" to say that he loves Ciel.
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holding tight to your quiet resentment by ace_BETHANY
Fandoms: Kuroshitsuji | Black Butler
05 Apr 2025
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It is exactly 3 years after he becomes a demon that Ciel Phantomhive wakes up without a butler.
46 years after he becomes a demon, Ciel Phantomhive lays down in his filthy, dusty bed and falls asleep.
60 years after he becomes a demon, Ciel Phantomhive awakes.
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原作者为 停云，本文为代发。原作链接见https://tingyun2916.lofter.com/post/73f40940_2bd583dba
啵酱生日快乐！提前写完提前发
※塞啵生贺文 ooc都怪我
※双恶魔pa 内容衔接第二季末尾
- Language:
- 中文-普通话 國語
- Words:
- 4,586
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 218
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Just one shots of Black butler
Ships:Grelliam, SebasGrell, Sebasclaude, Cielois, sebaciel/SebaAster (PLATONIC), UnderCiel(PLATONIC)
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They say, if you love someone, set them free...
Ten years after Ciel has been turned into a demon, his relationship with Sebastian is only getting worse as the older demon becomes cold and distant. One day, Ciel finally decides to take matters into his own hands and leave, hoping to set his butler free.
Written for Black Butler Bang 2024.
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Lessons in Pretending to be Human by BardsWife (creepyreactions)
Fandoms: Kuroshitsuji | Black Butler
26 Nov 2024
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In the bustling heart of a chaotic city, Sebastian Michaelis prides himself on order and cleanliness—until a feral child crashes into his meticulously organized life. However, the boy is more than he appears; he’s a baby demon, lost in a realm he doesn’t understand.
When a chance encounter leaves Sebastian with no choice but to take the boy in, he quickly learns that living with a creature who hisses at kittens and is quick to bite is only the beginning.
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150 years after they were turned in to demons, the only thing that makes Alois Trancy and Ciel Phantomhive feel alive is singing there hearts out on a center stage. A humdrum comfortable life, of working at a bakery by day and betting out under a spotlight by night. until there comfort is interrupted when one of Their customers turns out to be Ciel's old contractor, A demon who was robbed of a soul once promised to him.
(There will be alot of references to Musicals and I will try to explain them without being too disruptive.)
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Sebastian Michaelis and Ciel Phantomhive's Children Twin
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Стоя в рассеивающемся паре ванной комнаты и глядя на свои руки, Сиэль, как мог, вспоминал пламя, призванное им в тот день, вспоминал, как оно целовало и ласкало кожу, как он упивался его пляшущей, рвущейся мощью. Как к ногам упал сожженный труп его врага.
За последние четыре года ему не представилось случая призвать его снова. Он гадал, был ли он на это все еще способен.
Продолжение "До самого конца"
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