koostiddy
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Recent works
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Summary
Campus heartthrob Choi Beomgyu accepts a bet worth 1 million KRW to get the shy, elusive Huening Kai to sleep with him, but as he gets to know Kai, Beomgyu realises there might be more at stake than just 1 million KRW.
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Summary
The detective who chose ambition over love is forced to interrogate the boy whose life he destroyed – and the only thing more suffocating than the evidence is the love that refuses to die.
or: a fic based on Choi Hyeongsa and Choi Gwontu, inspired by TXT's series Hello Strangers.
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we haven't started, did i make you cry? by koostiddy
Fandoms: TOMORROW X TOGETHER | TXT (Korea Band)
31 Jan 2026
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Summary
Kai gets sent home by the producers after being unproductive at the studio. Feeling upset and discouraged, her girlfriends, Soobin and Beomgyu, cheer her up the best way they know how:
By fucking her stupid.
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Fake It Til You Make Out | NOT TO DO EP.〈Fall in Love〉 by koostiddy
Fandoms: TOMORROW X TOGETHER | TXT (Korea Band)
23 Dec 2025
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Summary
Kai has had the biggest crush on Beomgyu since his trainee days, so when he discovers that Beomkai is the least popular Beomgyu ship, he takes it as a personal attack.
Determined to change that, he responds by clinging to Beomgyu at every opportunity, publicly gushing about him, and aggressively pushing the Beomkai agenda under the very professional justification of fanservice – when in reality, the only person he’s servicing is himself.
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scream (the way you would if i ravaged your body) by koostiddy
Fandoms: TOMORROW X TOGETHER | TXT (Korea Band)
03 Dec 2025
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Everyone else sees only the sweetness. That’s the story told over and over again across campus, in whispers and half-jokes and fond sighs: Soobin, the perfect boyfriend. The patient leader, the soft-spoken council president, the boy who always has a hand free to carry Kai’s things or an umbrella tucked into his bag just in case. To most people, there’s nothing more to it than a portrait of romance so ideal it almost doesn’t feel real.
But what Kai would never, ever let slip, even if someone begged it out of him, is that Soobin is also filthy. Sin incarnate behind closed doors. The same boy who bows politely to professors and listens patiently to his friends is the one who pushes Kai down into the mattress and fucks him open with an unrelenting pace, relentless in a way that makes Kai forget his own name. He uses him like a toy, bends him until he’s pliant and trembling and begging, and never once apologises for it.
tl;dr Soobin's an angel in the streets and a devil in the sheets.
Recent series
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we saw you from across the room and... by koostiddy
Fandom TOMORROW X TOGETHER | TXT (Korea Band)
10 Apr 2025
Summary
Shy, innocent virgin Kai explores a world of sex and pleasure lead by an older, experienced couple, Yeonjun and Soobin.
- Words:
- 45,598
- Works:
- 2
- Bookmarks:
- 26
Recent bookmarks
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Summary
"This is my family. I found it, all on my own. It's little and broken, but still good. Yeah. Still good."
- Stitch, Lilo & Stitch (2002)
Kim has been living with the Kittisawats for a few years when the past comes knocking.
Series
- Part 2 of That's My Family
Bookmarked by koostiddy
09 Jan 2023
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The Trials and Tribulations of Being a Mafia Boss's PA by kibosama
Fandoms: KinnPorsche: The Series (TV)
28 Jun 2024
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Chay's desperate for a good job so he applies to be a mafia boss's personal assistant despite his misgivings.
Kinn decides Kim needs a PA whether the man wants one or not. Kim accepts with protests.
Or at least, he was protesting at first. Now, Kim's determined to keep Chay no matter the costs.
- Language:
- English
- Words:
- 40,473
- Chapters:
- 26/26
- Comments:
- 505
- Kudos:
- 2,741
- Bookmarks:
- 558
- Hits:
- 62,240
Bookmarked by koostiddy
07 Nov 2022
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Learning Kim by blackhighheels
Fandoms: รักโคตรร้ายสุดท้ายโคตรรัก | KinnPorsche: The Series (TV)
04 Sep 2022
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Summary
When Kim gets hurt during a secret mission no one knows anything about, Porchay makes it his mission to find out what happened and why Kim did not defend himself, even if Porchay is still angry and hurt about what happened. Things are more complicated than he could have imagined, but in all the chaos he learns a lot about Kim, and about himself.
- Language:
- English
- Words:
- 47,635
- Chapters:
- 9/9
- Collections:
- 1
- Comments:
- 515
- Kudos:
- 1,536
- Bookmarks:
- 320
- Hits:
- 25,264
Bookmarked by koostiddy
07 Sep 2022
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Something to Someone by Birdysaurus, Oxxymoron
Fandoms: รักโคตรร้ายสุดท้ายโคตรรัก | KinnPorsche: The Series (TV)
23 Aug 2022
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Summary
Five years have passed and for Porchay, life is on hold. Kim's time passes but nothing sticks. One chance meeting, and memories return, one touch and time starts moving again. But will it be worth it, and can either afford to try again?
NOW COMPLETE.
- Language:
- English
- Words:
- 21,386
- Chapters:
- 10/10
- Comments:
- 349
- Kudos:
- 879
- Bookmarks:
- 150
- Hits:
- 17,834
Bookmarked by koostiddy
02 Sep 2022
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Summary
He’s almost out the door, when he hears a hesitant voice from behind himself. “Are you okay?”
Kim looks back at Chay who has his fists balled up, lips pressed into a tight line, but he’s bravely looking Kim in the eyes.
“Sure,” Kim says, shrugging, because there is no way in hell he’s going to say anything different with all the bodyguards around.
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Kim is a fucking asshole. No handwritten songs or pouring his heart out will ever fix what he did to Chay. Nothing will fix the cold way he treated him in the past.“You don’t look fine,” Chay tells him, his face morphed into something between an angry scowl and worry; he’s honest and blunt as always.
- Language:
- English
- Words:
- 53,522
- Chapters:
- 10/10
- Comments:
- 275
- Kudos:
- 2,662
- Bookmarks:
- 537
- Hits:
- 61,142
Bookmarked by koostiddy
01 Sep 2022