1 - 20 of 126 Works in Soft Sebastian Michaelis
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Kuro Trope Week Day 5: Roleplay
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Sebastian could never let his guard down. Ciel knew that he was protected every hour of every day, with a contract sealing that safety in place. Even without that, Sebastian wasn’t the type of demon to give himself over to idleness or any kind of rest. Ciel had to trick him into forgetting he was a demon at all to force him to sleep.
Ciel held up a soft leather collar, looking down at Sebastian. Sebastian was kneeling in front of Ciel’s bed, almost as if he was going to assist Ciel with getting dressed. The main difference was that Sebastian had taken off his jacket and tie and had undone one button of his shirt to allow Ciel easy access to his neck. “Are you ready?” asked Ciel.
“Yes, master.”
Just the act of kneeling and slipping into a fully obedient mindset had Sebastian’s eyes glazing over as he fixed his gaze on the collar. Despite being a demon, Ciel could see grey tinting the areas under Sebastian’s eyes. He was exhausted and it was up to Ciel to take care of him.
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Ი︵𐑼 ۶ৎ - While investigating a criminal among the guests, Earl Ciel Phantomhive notices Onigi. Soft white hair frames pretty doe eyes and blushed porcelain cheeks. Such sweetness is a distraction and Ciel has quite the sweet tooth.
In a room full of masks and schemes, Onigi's unguarded smile is both disarming and dangerous, for even the sharpest Earl can find himself tempted by something pure, if only for a moment.
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Sebastian feels his lips twitch involuntarily. This boy-- equal parts endearing and infuriating. Now that he’s sitting up, Sebastian can get a good look at him. The room is dim, and the candlelight flickers over Ciel’s form, illuminating pink, angry welts where Sebastian’s fingers had been digging in. They’re sure to bruise by morning.
Guilt blooms in his chest again. “My lord-- your hips.”
“I know,” Ciel grumbles. “I told you to be gentler.”
“Lay back, my lord. I’ll fetch the ointment.”
Series
- Part 20 of Kinktober 2025
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phantomhive manor diaries; butler afterhours by msmichaelis
Fandoms: Kuroshitsuji | Black Butler
19 Oct 2025
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main character is a historian who studied the phantomhive family throughout her whole career, and after a big turn in her life, received a gift from the heavens. you wake up in the phantomhive mansion, and you know you dont belong there. ciel doesnt seem to realize that your presence is odd, but his butler does.
taking that as a gift, you decide to do your best to live a fully authentic life pretending you're someone you're not.
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first time writing a fic, english isn't my first language so excuse mistakes!
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Tonight he hesitates. This time there is something new. At times, Ciel cries out words in his agony-- don’t touch me, stop that, leave him alone, no more. It’s not unusual, given the boy’s past. But this is the first time he’s heard a name, and one that has piqued Sebastian’s interest. The only other name to leave the boy’s lips has been his own, or his brother’s; it’s one and the same.
It’s not just a name that’s left the boy’s lips-- it’s Sebastian’s name, wet and desperate. Most nights, he only remembers the contract once he’s awoken, calling for his demon to come and comfort him. Sebastian’s never been featured in the nightmares, as far as he’s aware, at least not to the extent that the boy has cried out his name.
Series
- Part 6 of Kurishitsuji Tropes Week 2025
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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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Ciel raises one foot and kicks him in the shoulder. “Get on with it if you’re going to…”
”If I’m going to what?”
”You don’t have to enjoy it so much,” Ciel hisses.
“What was that?” Sebastian asks teasingly. “I can’t understand you, sweetheart. Are you trying to say something?”
Ciel kicks him in the shoulder again, then pulls his face away and blinks hazy eyes open to inform him, “You’re such a nuisance. I should just go back to sleep.”
Series
- Part 6 of Kinktober 2025
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Sebastian quickly gave Ciel’s body a once-over as he inspected for any spots with overly restricted circulation or muscles at risk of being pulled. After ensuring both ropes were tightened properly, Sebastian slowly let go of Ciel’s body. His fingers lingered against Ciel’s skin as he was reluctant to draw away entirely.
“Comfortable?” Sebastian asked.
Ciel gave an approving hum，slightly shifting against his ropes. His body subtly swung to and fro in mid-air, back arched from Ciel’s attempt to maintain eye contact with Sebastian.
Sebastian sighed in relief, his hand traced the tip of his chin as he pressed a soft kiss to Ciel’s temple, “You’re doing so well for me, my lord. So pretty like this, hanging like a slab of meat to be butchered.”
Series
- Part 2 of Sebaciel Kinktober 2025
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Lost And Returned {Crossover Fanfiction} by Darcy345, DazaiMancer
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, Kuroshitsuji | Black Butler, 文字化化 | Homicipher (Video Game)
07 Sep 2025
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Started: February 5, 2025
Finished:
Runa wakes in a crumbling, dust-choked mansion with no memory of how she got there—or where her husband Dazai has disappeared to. Desperate to find him, she teams up with the enigmatic Darcy, whose eerie composure hints at dark secrets of her own. Meanwhile, Dazai joins forces with Darcy’s husband Sebastian, navigating twisted corridors and sinister apparitions. As each pair races to reunite, they discover the house itself may be alive with malevolent forces.
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A comfortable, loving morning.
Series
- Part 5 of Black Butler
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Sebastian had limited experience with human children, and never before had he been summoned and leashed by one. He had very little knowledge on how to care for them, and no one to ask his most basic questions. After all, he was meant to be an experienced butler who was well-prepared for every aspect of this job.
Was this normal behaviour for young boys? To- regress, he supposed?
He had no way to know. Warily, he resigned himself to weathering this mood of his master’s like he weathered all the boy’s moods-- with amusement and dexterity.
agere ciel + soft seb for the soul
Series
- Part 1 of Agere Ciel
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Sebastian and Ciel have enjoyed being closer than typical master and servant as of late, but they both mistakenly think that the other resents the proximity at the hotel.
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“Is there a problem?” asked Ciel.
Sebastian looked up at him. “Somewhat. I have a concern about our sleeping arrangements.”
“You seemed upset that we were roomed too closely.” Ciel remained aloof as he pulled his robe tighter around himself. The last thing he wanted was to show that the disdain at their proximity hurt him in any way.
“Hmm, I was surprised that the hotel would house all of their noble guests and servants in such a manner, but my concern is the opposite. Although it's only the other side of the wall, it makes me uneasy to leave you in here alone while we still don't know the details of this place.”
Ciel blinked as he processed what Sebastian was implying. For some reason, it made his chest feel warm. “You’d like to stay here instead?”
Sebastian nodded, not meeting Ciel’s eyes. “I can’t force you to be okay with the intrusion, but I think it’s the wisest option.”
How could he think that? “It isn’t an intrusion."
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Two lonely boys find companionship in each other.
In which Sebastian has very little self-control and finds his feelings for the younger boy very conflicting. Meanwhile, Ciel is very sure what he wants (Sebastian).
An AU of @rkgkakira_a on twt’s Sebaciel Neighbors AU
titled after careless by FKA Twigs ft Daniel Ceasar
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Eva Wilson is an ordinary British teenager, just another girl with nothing remarkable about her life. That is, until a car crash changed everything.
In the moment between life and death, she unknowingly formed a contract with a demon, Sebastian Michaelis.
For Sebastian, this was no coincidence. He had been waiting for this moment. As a descendant of Ciel Phantomhive, Eva carried something unique within her, a soul eerily similar to that of the young Earl and that woken the demon's appetite.
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Mixing, or To Love Is to Be Changed by peanutbutterjellyfish
Fandoms: Kuroshitsuji | Black Butler
20 Aug 2025
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Ciel was being given an invitation to participate in something otherworldly and frightfully intimate, and with a demon at that. He should say no, or at least wait until he wasn’t so fragile with tearstains still on his face, but the hope that piqued his interest emboldened him. “Does it hurt?”
“It’s unnerving, but you won’t be harmed.”
Not the best response, but it was something.
Ciel narrowed his eyes. “And this isn’t your way of getting a bite of me early, is it?”
Sebastian chuckled. “No, more like a long taste before spitting you back out, intact and whole.” He seemed excited despite his effort to be composed. Ciel had never caught Sebastian looking so openly invigorated. “You’ll feel me just as much, young master. If anything would send you scurrying from this, it would be that.”
Yet again, his curiosity won out. Ciel wanted it so badly, to lay his soul out and all of his burdens with it, even if coming together meant fear or pain. If he was frightened out of his mind, at least he wouldn’t be alone.
That was all he wanted. To not be alone. He could let Sebastian in, let him understand him while he was still living, while he needed this.
“Okay.” Ciel tried to sound brave. “How?”
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“You have moved beyond an issue of manners and are on the verge of transgressing the laws of gravity,” commented Sebastian, standing next to Ciel's desk with his arms folded.
Ciel, cheek lying on his arm as he read a paper sideways, made a vague noise of disinterest.
“You’re going to get stiff like that,” insisted Sebastian.
“I already am, why else would I be like this?” Ciel grumbled and rubbed his eyes with a wince.
Sebastian moved behind him, sliding a palm across his upper back. “You ought to take a break, then. When did this start?”
Ciel sighed, sitting up and wincing as his muscles complained at the movement. “It's been a few days. I’ve had all of this extra work to do with the new year approaching both regarding the company and the estate. Nothing has helped.”
“That’s because you haven’t asked me for help.” Sebastian clapped his hands once. “I insist you take a break and let me give you a massage.”
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“Get under the covers, my lord.”
Ciel makes an irritable noise but sits up properly, kneeling on the bed. “No. You do it.”
Sebastian’s eyebrows knit. “Are you five? Do you need me to do even this, my lord?”
“I don’t need it, but I commanded you to do something, so-”
The butler cuts him off with a wave of his hand. “Very well, my lord.” The words have hardly left his mouth before Ciel finds himself being ushered up the mattress.
But not by gloved hands; no, Ciel finds himself being gently pushed towards the pillows by thin, wavering, tendrils of shadow. They’re cool to the touch, though not frightfully so, and they press gently to his body, herding him like a misbehaving lamb.
// a 5 + 1 of ciel and sebastian's shadows
Series
- Part 2 of Ptolemaea
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Finny had never really known what a year meant.
He knelt by a flowerbed he'd planted a year prior, which had somehow survived under his care. Sebastian had told him that the primroses were perennials, so they would bloom year after year, but the sight of the newly opening, pale blossoms made Finny's chest seize up.
Finny sniffed, dragging his sleeve across his face.
“Whatever is the matter?” asked Sebastian, calm yet puzzled voice coming from over Finny's shoulder. “The flowers are perfectly intact.”
“Yeah! I just…” It must sound silly, but Finny smiled through his tears. “We made it a whole year, and so did they.”
Sebastian, who was perfect at everything, also had a knack for figuring out what Finny actually meant versus what he said. “I see. A year of happiness, culminating in new life. I imagine you're going to be thrilled when the harvest comes back around.”
“Yes! Yes, exactly!” Finny beamed at Sebastian, expecting for Sebastian to go and find something more urgent to do, but even Sebastian was momentarily lost in thought. “Sir?”
“It's an odd thing for me to think, after the life I've lived,” admitted Sebastian. “But this is the longest I've ever stayed in one place as well.”
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The Queen's Watchdog is coming down with the flu (or something), but it will be a cold day in Hell before he admits it! There's a case to conclude, appearances to uphold, and no time for lying about in bed. All the while, Sebastian does his best to care for his stubborn & frustrating young master.
A slice-of-life sick fic, as canon-compliant as I can make it, set roughly between Book of Murder and Book of the Atlantic, but with a few nods to things later revealed in the series.
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The kitchen is Sebastian’s favorite place to be when he has it all to himself, and he's absorbed enough that he doesn’t notice the soft pattering of footsteps heading towards him until his little lord is barging into the kitchen. Sebastian nearly startles, setting the bowl and spatula on the countertops and turning to scold the boy.
The words die on his tongue immediately, eyebrows furrowing. “My lord?”
Ciel stands in the doorway, nightshirt loosened and hanging off one shoulder, hands balled into fists around the hem. There are tears in his eyes, though restrained ones, and his ears are pink.