riomariyn
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Recent works
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Hermione Granger and the Quest for Academic Validation by riomariyn
Fandoms: Harry Potter - J. K. Rowling
06 Jan 2026
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Summary
Hermione Jean Granger had been best of her year in every subject since pre-school, and as such, she determined it would be prudent to seek advance tutoring for her new school. If that meant following magical werewolves or wrestling trolls, so be it (better dead than expelled after all).
Nymphadora Tonks and Remus Lupin in no way intended to become the unofficial mentors of an 11-year-old muggleborn girl. They resign themselves to trying to drill a survival instinct into her head any way that they can.
Equipped with some (possibly illegal) hexes, some semblance of common sense, and ambition that could put Salazar himself to shame, Hermione sorts Slytherin.
What could possibly go wrong?
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Books and Bitching with Harley and the Hood by riomariyn
Fandoms: Batman - All Media Types, Batman: Under the Red Hood (2010), Red Hood: Lost Days
05 Mar 2025
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As an ex-psychologist turned vocationally-obsessive-crazy-bitch turned reformed antihero (via the cleansing power of recreational marijuana and lesbianism), Harley knows a thing or two about psychoanalyzing. It was one of her favorite hobbies. In undergrad, she’d spent many a-night with fellow premed students (among them Brucie Wayne-- and don’t get Harley started on that guy), picking apart fictional characters, politicians, celebrities, and peers alike with speculation as to the origins of their truly baffling psyches. Alas, in her professional life, doctor-patient confidentiality had prevented her from sharing her thoughts with friends (not that she would have besides), and now her days as Dr. Quinzel lay behind her.
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Jason finds himself inexplicably in a book club turned therapy circle with Harley Quinn. Yeah, he's not sure how this one happened either. But Harley is determined to force her new friend into emotional stability, happiness, and reconciliation with his estranged batfam if they have burn down the Gotham Barnes & Nobles to do so.
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Marlene McKinnon is in love with her best friend. It’s a damn shame she always mucks things up.
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"average person breaks their nose once a year" factoid is actually just a statistical error. Regulus Black, a snarky idiot with an immensely punchable face who breaks his nose seven times a year, is an outlier and should not have been counted.
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Sirius is getting seriously concerned with how often his little brother is getting his arse kicked, and brings him to Welton Academy's underground fight club. Somewhere along the line, Regulus falls in love, walks five miles through the mud, and kicks Lucius Malfoy's shiny white teeth in. Not necessarily in that order.
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'cause you're just a man (it's just what you do) by orphan_account, riomariyn
Fandoms: Harry Potter - J. K. Rowling
28 Jul 2022
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During Regulus Black's first year at Hogwarts, he feels nothing but contempt for his stupid, troublemaking, Gryffindor brother, (who left him all alone in that cold, cold house), and his ragtag group of blood traitor friends.
As he grows (and gets kidnapped by said brother), he finds his contempt turned to begrudging tolerance and himself in a truely ill-advised relationship consisting of passionate trysts with Gryffindor’s golden boy, James Potter. Regulus knows that it won’t work out. That eventually, someone will get hurt. Still, James is the kind of hurt you lean into, addicted to the thrill of the flight right up until the fall. Maybe even still then.
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Reggie and James fight, then fuck.
Series
Recent series
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all for freedom and for pleasure (nothing ever lasts forever) by orphan_account, riomariyn
Fandom Harry Potter - J. K. Rowling
12 Jun 2024
Summary
Collection of short, unrelated NSFW marauders fics!
- Words:
- 17,302
- Works:
- 3
- Bookmarks:
- 6
Recent bookmarks
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We know the story of how Project Hail Mary ends (if not, finish the book bc spoilers obv). Rocky and Ryland go to Erid together, where it’s up to the reader to decide whether or not Ryland ever returns to earth.
But what if they never went to Erid in the first place?
What if Rocky had joined Ryland on the journey to Earth?- Language:
- English
- Words:
- 93,101
- Chapters:
- 19/?
- Comments:
- 652
- Kudos:
- 1,651
- Bookmarks:
- 443
- Hits:
- 35,455
Bookmarked by riomariyn
18 May 2026
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Summary
“What are you talking about?” Grace's fingers played quick chords as he spoke. He didn’t even look as he did it, but it did not make them any less purposeful.
“Discussing possible reasons why Tau Ceti is not infected while other stars are,” Eva replied deftly. “I would invite you to join, but we were just finishing—”
“Oh, that’s easy.” His hand twisted a knob, and the notes came out sharper. “It is infected—Petrova Line and everything.”
In Grace's opinion, dreaming about time traveling is no excuse for getting out of practice with his Eridian. To the rest of the Petrova Taskforce, it seems a bit odd that their resident Astrophage expert has suddenly taken to carrying a keyboard around and playing it whenever he speaks. Eva Stratt resolves to figure out what is going on.
- Language:
- English
- Words:
- 66,746
- Chapters:
- 15/23
- Collections:
- 28
- Comments:
- 8,424
- Kudos:
- 18,738
- Bookmarks:
- 5,175
- Hits:
- 250,482
Bookmarked by riomariyn
18 May 2026
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Harry and Draco meet in Madam Malkin’s and instantly take a liking to each other.
Just kidding. They don’t, but Harry does get sorted into Slytherin, and they do become extremely good friends.
- Language:
- English
- Words:
- 204,813
- Chapters:
- 37/37
- Comments:
- 1,254
- Kudos:
- 8,654
- Bookmarks:
- 3,313
- Hits:
- 296,739
Bookmarked by riomariyn
20 Apr 2026
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It’s the summer after fifth year, and Sirius has made himself scarce as usual. But then Remus catches a glimpse of him in Witch Weekly’s special on the Black-Malfoy wedding. Something about that photo is very, very off…
Turns out this is the summer Sirius runs away. Or tries to. Because the Blacks are not giving up on their heir without a fight.
Series
- Language:
- English
- Words:
- 38,042
- Chapters:
- 8/8
- Collections:
- 6
- Comments:
- 322
- Kudos:
- 3,212
- Bookmarks:
- 867
- Hits:
- 63,246
Bookmarked by riomariyn
09 Apr 2026
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Professor R. J. Lupin and the Cursed Pub by basketofnovas (slashmarks) for the_glow_worm
Fandoms: Harry Potter - J. K. Rowling
12 Mar 2021
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Summary
Remus gets back from a work trip to find the pub he fills in at has been cursed. Rather than too few suspects, there are far too many.
- Language:
- English
- Words:
- 10,522
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 30
- Kudos:
- 172
- Bookmarks:
- 35
- Hits:
- 1,336
Bookmarked by riomariyn
05 Apr 2026