Iapetus
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Recent works
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The Proposal by Iapetus for Ryter21
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Horus Heresy - Various Authors
25 Dec 2025
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Summary
Sanguinius is clearly the best choice for Emperor Regent of Imperium Secundus - this is something that both Guilliman and the Lion can agree on. Now? Well, they'll just have to convince him. Luckily for them, Guilliman has an excellent argument to fall back on, if they need it.
[Spoiler: They'll need it.]
Series
- Part 1 of Altar Diplomacy
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Unyielding by Iapetus for Lieara
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Horus Heresy - Various Authors
27 Sep 2025
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Summary
When the Lion is discovered by the Imperium, Horus is sent to be his mentor. When that goes poorly, Sanguinius is assigned to take over the task.
They are not what the other expects.
(This story is a part of two different series - one as the first story in the series, and another where it is not. It can also be read as a stand-alone story.
Please see the Note at the beginning of Chapter 1 about pairings before reading.)
Series
- Part 3 of The Great Angel's Court
- Part 1 of A Courtship of Kings
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High Stakes by Iapetus for Lieara
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Horus Heresy - Various Authors
25 Dec 2024
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Summary
Angels don't have fangs, right? Then again, is Sanguinius really an angel?
Torgaddon and Abaddon are determined to find out. (About the fangs, at least.)
(Takes place shortly after Sanguinius is discovered, when he's traveling with the Luna Wolves. And while this is part of a larger series, it can be read as a one-shot.)
Series
- Part 2 of The Great Angel's Court
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Macraggian Hospitality by Iapetus for Lieara
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Horus Heresy - Various Authors
28 Nov 2024
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Summary
“You still don’t need to do this.”
Guilliman sat down on the couch next to Sanguinius. “I would debate that I do. Theoretical: The three of us have all been through grueling ordeals in the last several months, one right after another. We are exhausted. We are injured. We are grieving our sons lost, the relationships we thought we had with our brothers turned traitor, and the galaxy that we no longer have. But we are primarchs, and we need to be a symbol for our sons, and the common people. We do not have the same avenues available to use for stress relief. We cannot show weakness.
“Practical: Macraggian baths are legendary, and do much to ease the body and the spirit. You can be vulnerable around me, Sanguinius. You don’t have to be perfect. I know how to perform Macraggian hospitality. You can get some much-needed relaxation.”
(Takes place shortly after Unremembered Empire. Chapter 1 is Sanguinius/Guilliman, Chapter 2 is Sanguinius/Guilliman/Lion.)
Series
- Part 1 of Cultural Exchange
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Muddling The Sweetwater by Iapetus for Lieara
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Horus Heresy - Various Authors
23 Nov 2024
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Summary
The rules of hospitality varies on Baal and it's moons. There is a thru line, of course, but Sanguinius understands the importance of nuance. So, when Sanguinius is assigned to be the Lion's mentor, he is determined to learn the rules of Aldurukhian hospitality out of respect for his brother.
In the strange world Luther now lives in - with Caliban welcomed back into the embrace of the Imperium - he wishes to aid his gain-brother wherever possible.
(This is a part of three different series. Prior knowledge to any of them is not needed to enjoy this story. Please see note at beginning for how these apply to the other series, if interested.)
Series
- Part 1 of Essence
- Part 4 of The Great Angel's Court
- Part 2 of A Courtship of Kings
Recent series
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Altar Diplomacy by Iapetus
Fandom Horus Heresy - Various Authors, Warhammer 40.000, Warhammer 40k (Novels) - Various Authors
25 Dec 2025
Summary
When the triumvirate decide that the best way to consolidate their power is through marriage, there's a lot to be done before they say "I do." This series follows the (AU, obviously) whirlwind engagement to their marriage and their wedding night.
- Words:
- 3,682
- Works:
- 1
- Bookmarks:
- 1
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The Great Angel's Court by Iapetus
Fandom Horus Heresy - Various Authors, Warhammer 40.000, Warhammer 40k (Novels) - Various Authors
27 Sep 2025
Summary
Sanguinius never had the desire to take power from the Emperor of Mankind. Perhaps it was his lack of desire to rule on a larger level that made Chaos less interested in him. Perhaps it was why the Emperor didn't think Sanguinius would ever stand up to him, or at least, in time before he could dispose of the primarchs completely.
But neither the Emperor of Mankind or Chaos could have anticipated the love that Sanguinius has for his brothers. So even though Sanguinius had no idea he would need to fight, he found himself in the perfect position to resist, and save the ones he loved the most.
Sanguinius did not start the war, but he is determined to end it.
This is a collection of stories in the same canon-divergent AU - some of them very significant moments - some of them very small moments. I'll mark which ones can be read stand-alone and which ones would be helped by more context of other stories.
- Words:
- 43,738
- Works:
- 7
- Bookmarks:
- 11
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A Courtship of Kings by Iapetus
Fandom Horus Heresy - Various Authors, Warhammer 40.000, Warhammer 40k (Novels) - Various Authors
27 Sep 2025
Summary
In the midst of the Great Crusade, love is in the air. The Lion never liked the idea of seeking out a consort, because he wasn't interested in romance. Or, at least, that's what he used to think. Then he met Sanguinius, and everything changed.
- Words:
- 21,617
- Works:
- 2
- Bookmarks:
- 4
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Essence by Iapetus
Fandom Horus Heresy - Various Authors, Warhammer 40.000, Warhammer 40k (Novels) - Various Authors
23 Nov 2024
Summary
Once upon a time, I was working on a fill for an exchange. I loved the idea so much, but due to things going on in my life, I knew there was no way I'd be able to write the story before the due date.
And in the process, it kinda evolved. This isn't going to be a long series (I don't think), and it's more connecting the three stories I have planned to make it easier for the reader to follow.
- Words:
- 2,203
- Works:
- 1
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A Rose Distill'd by Iapetus
Fandom Horus Heresy - Various Authors, Warhammer 40.000, Warhammer 40k (Novels) - Various Authors
30 Apr 2024
Summary
Sanguinius and Raldoron were not expecting on their relationship becoming a triad, with the addition of Mkani Kano. And Kano certainly wasn't expecting it, either.
Kano also wasn't expecting how much he'd enjoy being in a subservient role.
This is a lot of smut. This also takes place decades before Kano met Meros.
This is a very loose collection of stories set in the same 'verse. I wanted to keep these stories connected, and also easy to distinguish the difference between my other stories I plan to write involving Kano.
I'm not sure how long this series will be, or when it will be updated.
- Words:
- 14,160
- Works:
- 1
- Bookmarks:
- 1
Recent bookmarks
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- Words:
- 180,959
- Works:
- 9
- Bookmarks:
- 5
Bookmarked by Iapetus
26 Nov 2025
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Count to Zero by Invidioso
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Horus Heresy - Various Authors, Warhammer 40.000: Inquisitor - Martyr (Video Game)
24 Jan 2026
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Summary
The Heresy has began and Teseranthe finds herself away from Caliban and on the distant lands of Macragge. Her simple life as a High Monarch’s bodyguard is flipped upside down when she learns that this immortality she always had; was a contract signed with a few secret caveats.
For there are hundreds of Null Sisters out there, but only one Alpha Pariah.
Three Primarchs all of them with their own idea on how this divine mutant can end the war.
One woman who -simply put- did not ask for any of this.
And an empire made of glass, that will shatter when fate’s clock counts to zero.Bookmarked by Iapetus
25 Sep 2025
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de même que les incendies éclairent toute la ville by magnificentbastards
Fandoms: Les Misérables - All Media Types, Les Misérables - Victor Hugo
18 Apr 2013
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Summary
'Once again the scratching of the nib of Enjolras’ pen can be heard over the muffled conversation and music leaking into the backroom from the front of the café. When he writes, Courfeyrac notes, Enjolras’ face is transformed in a different way to when he addresses a crowd with bloody rhetoric and calls to arms – he writes as though he is all but overcome by the strange all-consuming serenity of his purpose.
It is quite beautiful. Combeferre, his eyes gentle, has not stopped watching Enjolras since he put pen to paper once more; Courfeyrac can only assume he agrees.'
Series
- Part 1 of liberté, égalité, fraternité
Bookmarked by Iapetus
20 Aug 2025
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Summary
Guilliman was here, his fleet hovering above the planet of Kyrandus, whose defences Perturabo and his Legion had just ground to dust, to tell a beautiful lie. A tale about the Imperium as a promise of hope, glory and stability. Perfectly designed to exploit this planet as another resource, merely on an extended timescale.
The cobalt and gold on the surface were mere drapes on the truth; while… aesthetically sound.Bookmarked by Iapetus
08 Aug 2025
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Summary
In the dark night of the Warp, they still have each other.
- Language:
- English
- Words:
- 0
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 9
- Kudos:
- 20
- Bookmarks:
- 1
- Hits:
- 251
Bookmarked by Iapetus
30 Jul 2025