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A newcomer shakes everything up at the hotel and seems to have an agenda of her own. It's up to Alastor to discover what that is.
In which a princess of hell goes undercover to look after her sister. Chaos ensues.
Bookmarked by RubyGemGreen
16 Feb 2026
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***This is a rewrite. See original here: https://archiveofourown.org/works/54041317 ***
Maria the Telephone Demon (reader) has some unfinished business to attend to...
After a tense confrontation with the Radio Demon, you find yourself in a situation you never expected...
A/N: "Reader insert" character more of an OC named Maria because I do what I want.
Aroace reader x aroace AlastorWarning: possessiveness, violence, sexual assault, idk it's literally based in hell, things get worse, reader's discretion is advised
I swear the angst/comfort/fluff coming will make the more horrific moments worth it <3
Series
- Part 5 of The Telephone Demon
Bookmarked by RubyGemGreen
16 Feb 2026
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with valentine's day being just around the corner and your feelings towards a certain scientist gets stronger in every passing day. convinced that confessing is futile—comes a helping hand pushing you to express those feelings you've long tucked away out of fear.
Bookmarked by RubyGemGreen
16 Feb 2026
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Before the petrification event that changes the world forever, Valentine’s Day arrives at Ishigami Senku’s high school. Six months into dating the science-obsessed genius, (Y/N)—a figure skater with a sharp mind for biology and chemistry—decides to leave him a handwritten note in his locker instead of interrupting his research. It’s an invitation to dinner, a quiet confession of effort, and a hopeful risk.
He never sees it.
Lost in rocket designs and strange petrified birds, Senku skips his locker entirely. He’s affectionate but distracted, and when his only text at the end of the day says not to wait up, (Y/N)’s heart sinks. She understands his tunnel vision—but that doesn’t stop it from hurting.
Instead of letting the day fall apart, she creates her own Valentine’s celebration: pink, heart-filled ramen made with careful food chemistry, music blasting as she dances through disappointment. Just as she sits down alone, the doorbell rings.
Senku, breathless and apologetic in his own awkward way, finally shows up—ready to learn, to listen, and to share a Valentine’s night that’s unconventional, nerdy, and uniquely theirs.
Bookmarked by RubyGemGreen
16 Feb 2026
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Spending your final year of high school was never supposed to feel like this—quiet dinners, long evenings stretched thin by half-finished conversations, and the steady comfort of someone who has always been there.
With Byakuya Ishigami leaving Earth behind, you find yourself drifting more often into Senku’s orbit, the two of you settling into an easy, familiar rhythm that feels almost domestic in its simplicity.
You and Senku have been friends for years.
Not lovers, not something easily labeled—just two people who understand each other in ways no one else quite does.
As summer fades and school looms closer, your bond deepens through shared routines, late-night television, small arguments, and unspoken care.
It’s comfortable.
Safe.
The kind of connection you don’t realize you rely on until it’s everywhere.
But as the year unfolds, the balance begins to shift. Subtle changes creep in—missed days, unexplained fatigue, moments of unease.
Life keeps moving regardless, pressing forward with expectations and plans, even as something quietly unravels beneath the both of you.
Series
- Part 31 of Senku x Reader (because there’s not enough)
Bookmarked by RubyGemGreen
14 Feb 2026
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You exchanged letters with a charismatic radio star in the 1920s, until he disappeared and left you heartbroken. Now, you're staying at the Hazbin Hotel, and those letters still haunt you in the run up to Valentine's Day.
Bookmarked by RubyGemGreen
14 Feb 2026
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Alastor takes an interest in the Princess of hell and her silly redemption idea dragging Cynthia into it along with him. It has been seven years since he vanished without a trace leaving her alone. Things have changed a lot for her. Charlie has one year to try and prove her hotel works to heaven to try and stop the exorsists! Her girlfriend Vaggie used to be an exorsist herself but believed in Charlies vision. Angel Dust wanted to use the hotel as a place to escape Valentino, too bad Charlie was not the heavy hitter he thougth she was.
And Cynthia just wants her life to go back to the settled way it was before this whole mess started.Series
- Part 3 of A Doe in Hell
Bookmarked by RubyGemGreen
14 Feb 2026
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Bonus Dating Tips for the Stone Age Geniuses by Nyllus
Fandoms: Dr. STONE (Manga), Dr. STONE (Anime)
13 Feb 2026
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Bonus material from “Dating Tips for the Stone Age Geniuses” — extra scenes, chaos, fluff, and dangerously suppressed feelings that didn’t quite fit into the main storyline.
These chapters aren’t canon to the plot, but they live in the same emotional universe. Expect seasonal disasters, holiday disasters, and character-driven disasters in general. Updates will be irregular—I only post when inspiration strikes or Senku gives me brainrot.
Not required reading, but highly recommended if you enjoy slow-burns, mutual pining, and characters being their emotionally constipated selves in new environments.
Series
- Part 2 of Stone Age Geniuses
Bookmarked by RubyGemGreen
13 Feb 2026
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You work at a diner in New Orleans, it's a comfy job if a little boring.
When you meet one of your regulars at a speakeasy, well life becomes a bit different to say the least.Bookmarked by RubyGemGreen
03 Feb 2026
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One does not usually expect to end up about 500 years in the past because of a mirror, nor do they expect to end up in a completely different hemisphere and yet that is what happened to (Y/N). Now she has to jump between the present and the past to work out what this Ryū no kokoro is, how it relates to her and what to do about it so she can go back to her normal life.
Also she has to travel with this arrogant asshole and his group of misfits because he has somehow come to the conclusions that she is A) helpful in tracking this demon he's looking for and B) his eight-year-old human ward need an motherly figure in her life, something (Y/N) has no experience in being!
Bookmarked by RubyGemGreen
02 Feb 2026
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The words that graced her apt tongue fell short of escaping her, rendering her mute as she stared at the screen displaying her live-chat log. Her small hands paused in their motions to gather up her collection of runic stones from the mat, their cool, smoothed surfaces a calming balm to the aching burns that still blemished her fingertips.
mentalistfan_0104: Japan is a beautiful place to visit during the summer. Particularly, the Makino Botanical Garden in the Kochi Prefecture. In any case, I sincerely hope you enjoy your upcoming trip to the fullest, Anemoia-chan.
She stared at the chat message from someone she had never once encountered online, so formally written compared to the onslaught of brainrot chatter that usually made up her small circle of digital spectators. She ignored the growing spiel of questioning input of the regulars as she felt the tiniest of smiles tug at her lips, and leaned a little towards her microphone.
'Thank you, Mentalist-san.' She greeted softly as she watched that message slowly disappear past the top of the Live-chat Box. 'I'll make sure it's the first place I visit when I arrive.'
The 1st of June just couldn't come fast enough.
Bookmarked by RubyGemGreen
02 Feb 2026
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In which, Senku's struggling writer best friend thought of a solution for her dilemma of not being able to write smut for the first time that involves them doing it simply—for reference.
Bookmarked by RubyGemGreen
02 Feb 2026
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After years of dating, Senku reminds you that he takes care of you now.
Bookmarked by RubyGemGreen
02 Feb 2026
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The second fic and RYUSUI FOCUS from my highschool au series featuring the four KOS generals.
In which, things take a sudden turn at the first day of the school year when you officially joined the student council of Hirosue High. Comes Nanami Ryusui, the greediest man—boldly declaring his desire towards you during the entrance ceremony, infront of the whole student and faculty body the moment he catches you in the middle of his speech as the newly appointed student council president. What does one even do in such situation after being desired by the wrong Nanami?
Bookmarked by RubyGemGreen
02 Feb 2026
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In a shared college dorm, a late-night study spiral pushes you past exhaustion and straight into burnout.
Senku notices—of course he does. With ruthless logic and infuriating affection, he stages an intervention: confiscated notes, enforced hydration, real food, and a break that you refuse to admit they need.
Series
- Part 30 of Senku x Reader (because there’s not enough)
Bookmarked by RubyGemGreen
02 Feb 2026
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You were once the archangel Raphael, but your brothers and sisters only cared that you committed one single sin: you dared to heal the devil himself. Unable to convinced them that healing their younger brother wasn't a sin at all, they send you down to hell to join him.
Desperate and alone, you make a deal with the first demon that came across you. Now known as you Dove, you serve Valentino to his strictest command, unable to leave and forced to do some of the most vile acts.
Everything changed the day the Radio Demon stopped into Valentino's studio.
- Language:
- English
- Words:
- 10,249
- Chapters:
- 1/?
- Collections:
- 1
- Comments:
- 5
- Kudos:
- 25
- Bookmarks:
- 10
- Hits:
- 269
Bookmarked by RubyGemGreen
02 Feb 2026
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Early fall of 1925, New Orleans most famous jazz artist Lucille Benoit decides to settle in her city after years of touring and performing. Alastor, the ever-so-ambitious gentleman he is, helps her on his way to work, the start of the new path on both their lives.
Bookmarked by RubyGemGreen
01 Feb 2026
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Gem in the Inferno (Under Edit) by KonaDolphin_22
Fandoms: Hazbin Hotel (Cartoon), Steven Universe (Cartoon), Helluva Boss (Web Series)
14 Feb 2026
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In the chaotic depths of Hell, where demons revel in sin and survival, a new presence quietly stirs the flames. Nora is unlike anyone Hell has seen before — a half-human, half-Gem empath descended from Rose Quartz and Pink Diamond she uses her powers to guide her through her surroundings of hell.
When she arrives at the Hazbin Hotel, Charlie is intrigued by this strange, radiant newcomer, while Alastor is unnerved by someone who sees through his carefully crafted chaos. Vox watches suspiciously, and the other residents can’t decide whether she is a blessing… or dangerous
As Nora navigates this world of fire, manipulation, and fractured souls, her empathy begins to challenge Hell’s rules. Can someone who feels too much bring hope to the hopeless without losing herself in the process?
In a place where chaos reigns, Nora’s heart may be the most dangerous force of all.(I’m not interested in partnering with anyone for art. I prefer to create and post my own work so readers can see my personal visual storytelling.
Due to the scams I’ve been seeing on AO3 lately and the fact that I almost got caught by in one myself — I’m not open to unsolicited collaboration offers. Thank you for understanding.)
Bookmarked by RubyGemGreen
02 Feb 2026
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She wakes on the shores of a river in Hell. She doesn't belong there. When he finds her, he sees what a treasure she is and decides to make a deal.
Neither of them knows Heaven orchestrated their meeting.
Bookmarked by RubyGemGreen
02 Feb 2026
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Alastor’s Guide to Accidentally Being a Sensory Overload by UncharismaticCandle
Fandoms: Hazbin Hotel (Cartoon)
28 Jan 2026
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Alastor thinks he's great at communicating, after all, he can easily praise, lie, and manipulate however he pleases! Ha, words are his kingdom, his domain!
Until he met you and it turned out that you might be the first person who doesn't react appropriately to what he says.
And then? He just learns more about you. And suddenly he decides he'll adapt to you. Not the other way around.
***
Alastor x Autistic Reader.
Where he is an idiot who doesn't understand why you act this way, but he is learning.Bookmarked by RubyGemGreen
02 Feb 2026