Kuroshitsuji

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Diana Crevan: The Boiling Islands (Seasons 1–3)

Mixed
R
In progress
5
Author:
revkovaae
Fandom:
Naruto, Gravity Falls, The Owl House, Kuroshitsuji, Hazbin Hotel (crossover)
Pairing and characters:
Luz Noceda/Amity Blight, Emperor Belos/Luz Noceda/Amity Blight, Eda Clawtorne/Camila Noceda, Undertaker/OFC, Boscha/OFC, Willow Park/Hunter, Masha/Vee
Size:
planned Maxi, 99 pages, 34,000 words, 4 chapters
Last update:
12.04.2026
Tags: Age gap Angels Blackmail Child Abuse Demons Fantasy Fictional anatomy Friendship Hints of relationships Humor Hurt/Comfort Magical oaths Manipulation Mentions of betrayal Mentions of deaths Mentions of violence Obscene language Original male characters Psychology Resurrection Violence Spoilers ...
Luz and her best friend, Diana Crevan, find themselves in a strange world called the Boiling Isles. There, Diana learns about her origins and who she really is. (This is my fanfic that was posted on fanfiction.net.)

Big Hero 6: My Beloved Parents - First Cut (Film 1)

Mixed
R
In progress
0
Author:
revkovaae
Fandom:
Naruto, Fairy Tail, Big Hero 6, Kuroshitsuji, Tangled (crossover)
Pairing and characters:
Tadashi Hamada/OFC, Fiona Hamada, Robert Callaghan, Hiro Hamada, Honey Lemon, Frederick Flamarion Frederickson IV, Annabel Crey-Aken, Mirabelle Crey-Aken
Size:
planned Maxi, 33 pages, 10,018 words, 5 chapters
Last update:
18.03.2026
Tags: Adoptive families Adventure Age gap Anxiety Drama Found families Humor Hurt/Comfort Mentions of deaths Obscene language Original female characters Psychology Romance Teamwork Tragedy
Hana Hamada is a smart fourteen-year-old girl who pretends to be a boy and raises her five-year-old daughter, Fiona Hamada. One day, after Tadashi's death, their lives change forever.

The PLMMDH characters from Chapter 3 react to Hiro Hamada as nCiel Phantomhive (manga version).

Mixed
R
In progress
0
Author:
revkovaae
Fandom:
Big Hero 6, Kuroshitsuji (crossover)
Pairing and characters:
Bob Aken/Hiro Hamada, Trina/OFC, Dibs/Honey Lemon
Size:
planned Maxi, 2 pages, 733 words, 1 chapter
Date of creation:
11.02.2026
Tags: Age gap Anxiety Child Abuse Declarations of love Demons Enemies to Lovers Falling in love Fear of attachment First time Hints of relationships Hurt/Comfort Love Love/Hate Manipulation Mentions of deaths Mentions of violence Obscene language Panic attacks Psychology Reactions (stylization) Relationship development Secret feelings Violence
After the frozen Globby was removed from Hiro's room, Barb's daughter, Junnifer, decided to bring Hiro and Obake together through an animated manga about Hiro Homada's past. How will Obake react to Hiro's past and his terrible, tragic, and traumatic story? Find out in this fanfic.

Memento mori

Het
NC-17
In progress
3
Memento mori
Author:
LutienTinuviel
Fandom:
Kuroshitsuji
Pairing and characters:
OFC/Sebastian Michaelis, OFC/Lau, OFC/Undertaker, Ciel Phantomhive/Elizabeth Ethel Cordelia Midford, Angelina Dalles, Ran-Mao, Arshad Satyendra Iyer, Soma Asman Kadar, Grell Sutcliff, William T. Spears, Ronald Knox, Beast, Baron Kelvin, Mey-Rin, Finnian, Baldroy, Tanaka, OMC, OFC
Size:
planned Maxi, 3 pages, 1,153 words, 1 chapter
Date of creation:
11.02.2026
Tags: Angst Dark Drama Loud sex OOC Quiet Sex Romance Rough sex Shame kink Victorian era Violence Spoilers ...
In Victorian London, where secrets, death, and demons lurk behind luxurious facades, a new maid, Dolores Sinner, appears at the Fantomhive House. At first glance, she is a quiet, polite girl, perfectly fitting into the strict order of the mansion. But behind her calm smile lies something much older and far more dangerous.

Five-Year-Old Girl Yuki Hatake: Orochimaru's Path (Season 1)

Mixed
R
In progress
2
Author:
revkovaae
Fandom:
Naruto, Kuroshitsuji, Hazbin Hotel (crossover)
Pairing and characters:
Orochimaru/OFC, Naruto Uzumaki/Sasuke Uchiha, Kabuto Yakushi/Hinata Hyuga, Lucifer Morningstar/OFC
Size:
planned Maxi, 3 pages, 770 words, 1 chapter
Date of creation:
19.01.2026
Tags: Age gap Angels Angst Demons Drama Fantasy Friendship Humor Hurt/Comfort Murder Obscene language Original female characters Psychological trauma Psychology Romance Soulmates Violence Spoilers ...
A five-year-old girl named Yuki appears in Konoha and becomes Kakashi's adopted daughter. (First route)

The Phantom

Het
NC-17
In progress
5
The Phantom
Author:
Katsura Nagi
Fandom:
Kuroshitsuji
Pairing and characters:
Ciel Phantomhive/OFC, Ciel Phantomhive/alt!Elizabeth Ethel Cordelia Midford, Sebastian Michaelis
Size:
planned Maxi, 41 pages, 16,461 words, 5 chapters
Last update:
27.10.2025
Tags: Aged up Dark academia Detective Modern days No Canon Knowledge Required Reincarnation Russia Several POVs Slowburn
Having turned into a demon, Ciel has been trying to get out of his contract with Sebastian for over a hundred years now. As he travels in search of the solution, he meets a young Russian duchess, Elizaveta, who reminds him suspiciously of someone from his past.

In the Mountains

Slash
R
Finished
0
Author:
Toki-Toki
Fandom:
Kuroshitsuji
Pairing and characters:
Sebastian Michaelis/Ciel Phantomhive, Sebastian Michaelis, Ciel Phantomhive, Real Ciel Phantomhive, Vincent Phantomhive, Diedrich
Size:
14 pages, 5,292 words, 1 chapter
Date of completion:
27.02.2025
Tags: Aesthetics AU Eating disorders Elements of horror Fastburn Modern days Mountains Obscene language OCD OOC Small towns
There is definitely something in the mountains. This is an indisputable fact. Ciel is going to find out what it is, together with his new acquaintance, a thirty-two-year-old motel rat named Sebastian Michaelis. The mysterious gentleman in a 1950s bowler hat collects evidence and seems to be stalking someone.

Black Butler: Book About the Unknown

Het
R
In progress
2
Author:
valerie.zoe
Fandom:
Kuroshitsuji
Pairing and characters:
OFC/Sebastian Michaelis, OFC/Ciel Phantomhive, Sebastian Michaelis, Undertaker, Elizabeth Ethel Cordelia Midford, Blavat Sky, Grell Sutcliff, Real Ciel Phantomhive, Angelina Dalles, Baron Kelvin, William T. Spears
Size:
planned Maxi, 6 pages, 2,655 words, 2 chapters
Last update:
20.05.2024
Tags: Angst Canon Divergence Drama Hurt/Comfort Philosophy Romance Spoilers ...
If this is really not a dream, if they are real and I am not hallucinating... Judging by his future reaction, I will be able to determine whether I am in the manga or in the anime. - You are... - I looked at him - The younger twin? — something cold was placed on my neck.

Little Lord's Heir.

Gen
PG-13
In progress
0
Author:
Sweet coffee machine_9907
Fandom:
Kuroshitsuji
Pairing and characters:
Ciel Phantomhive, Sebastian Michaelis, Finnian, Baldroy, Tanaka, Mey-Rin
Size:
planned Midi, 1 page, 431 words, 1 chapter
Date of creation:
01.05.2024
Tags: AU Elements of fluff Former serial killers OOC
Ciel is no longer a 13 year old boy! And a twenty-three-year-old young man. Living in France, far from my older brother. He decided to return to his native country! I wonder if he will return alone?

The Black Wedding

Slash
Translation
NC-17
Finished
3
Author:
van Dort Ada Vorontsova.
Fandom:
Kuroshitsuji
Pairing and characters:
Sebastian Michaelis/Ciel Phantomhive
Size:
15 pages, 6,441 words, 2 chapters
Date of completion:
10.12.2023
Tags: Angst Blowjobs Demons Drama Fictional creatures First time Love/Hate OOC Post-canon Psychology Romance
That exceptional thing that happened to the contract between Ciel and Sebastian is an ill-fated, cursed union. Demons call it a black wedding. And no demon would choose to take Sebastian's place. Sebastian makes his final and desperate attempt to break his bond with Ciel.

Into These Waters of My Soul

Slash
Translation
NC-17
Finished
1
Author:
van Dort Ada Vorontsova.
Fandom:
Kuroshitsuji
Pairing and characters:
Sebastian Michaelis/Ciel Phantomhive, Real Ciel Phantomhive/Elizabeth Ethel Cordelia Midford, Vincent Phantomhive/Rachel Phantomhive, OFC
Size:
198 pages, 72,303 words, 19 chapters
Date of completion:
21.11.2023
Tags: Age gap AU Demisexual characters Drama Existential crisis Fictional creatures First time Forbidden relationships Gray morality Hurt/Comfort Loyalty Manipulation OOC Philosophy Psychology References to religion Romance Temptation Twins Victorian era Spoilers ...
Faced with an internal crisis, writer Sebastian Michaelis goes on a cruise to improve his health and finish his book. He meets his good friend Vincent, who introduces Sebastian to his sons. What a surprise for our hero when, quite unexpectedly, he finds himself in love with one of them. But the man has little time to figure out his feelings and their cause.

Intervention

Het
NC-17
Frozen
2
Author:
Daarkhavaun
Fandom:
Kuroshitsuji
Size:
6 pages, 2,845 words, 1 chapter
Date of creation:
14.11.2023
Tags: Adventure Canon Divergence Canon-characteristic cruelty Conditional immortality Dimensional Travel Drama Magical realism Non-human species Novelization Obscene language Original female characters Original male characters Partial OOC Romance Spoilers ...
«What is true in one world becomes an idea in other. All legends are legends in many dimensions, But the truth is only in the "native" one…» Thus, in the dimension in which two women met, "Black Butler" is only a work of fiction, although in another dimension it is real personalities and events.

The Secret Bond

Slash
Translation
PG-13
Finished
4
Author:
van Dort Medsestrichka
Fandom:
Kuroshitsuji
Pairing and characters:
Sebastian Michaelis/Ciel Phantomhive
Size:
4 pages, 2,413 words, 1 chapter
Date of completion:
08.11.2023
Tags: Drama Romance Spoilers ...
I was drawn to him, and he was drawn to me. I wanted to own him, and he wanted to belong to me. I was a conqueror, cunning and merciless, he was a besieged fortress. And I took that fortress, breaking through the walls and capturing my prey. He looked so natural in my arms. I shall never let go of him.