1 - 20 of 283 Bookmarks by InvincibleWarrior
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Betrayed by his wife, Greg had a one-night stand with Mycroft—then another, and another. They signed a no-strings-attached agreement, but Mycroft keeps breaking the rules.
Series
- Part 2 of Secret
Bookmarked by InvincibleWarrior
05 Jan 2026
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Bookmarked by InvincibleWarrior
02 Dec 2025
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While still hurting and wondering where Stella has gone, somebody turns up at station 51 with a big surprise for Kelly, a surprise that would change his life forever and give him everything he ever wanted.
Bookmarked by InvincibleWarrior
01 Dec 2025
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Two candidates and some rough yet comforting sex.
Series
- Part 1 of Just an excuse to write smut.
Bookmarked by InvincibleWarrior
28 Nov 2025
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Secretly married the only ones that knows are Boden, Mouch, Voight and Trudy.
Series
- Part 10 of My OTP ships series
Bookmarked by InvincibleWarrior
10 Nov 2025
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It’s date night and the boys have a reservation at a fancy restaurant in the city but Kelly has a surprise. Established relationship, everybody knows.
Series
- Part 3 of Matt and Kelly Oneshots
Bookmarked by InvincibleWarrior
19 Oct 2025
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After saving each other's lives and making up, Severide wakes up to the smell of Casey cooking breakfast.
Bookmarked by InvincibleWarrior
16 Oct 2025
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Sometimes, suddenly and without warning, a disastrous situation can turn into something better than you could've ever imagined.
[Wherein Matt's accident renders him temporarily useless, and he struggles with even the most basic of tasks, so it's up to Kelly to make sure the poor guy doesn't starve or go insane.]
Bookmarked by InvincibleWarrior
15 Oct 2025
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Matt can't sleep... read to find out (I'm laughing as I type this because there is no plot and I have no idea what tags to use because yes this is essentially porn but hey it's the weekend.)
Series
- Part 4 of Matt and Kelly Oneshots
Bookmarked by InvincibleWarrior
15 Oct 2025
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“Shit.”
Cruz didn’t respond. He couldn’t respond. Not as he stared at the space Casey had just occupied.
Otis turned to him, frozen in shock, “I just hit Casey.”
Edited: 27-12-23
- Language:
- English
- Words:
- 43,807
- Chapters:
- 14/14
- Comments:
- 216
- Kudos:
- 592
- Bookmarks:
- 131
- Hits:
- 28,207
Bookmarked by InvincibleWarrior
15 Oct 2025
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Matt knows Kelly in a way no one else does, perhaps that's why he isn't worried.
Bookmarked by InvincibleWarrior
13 Oct 2025
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Casey doesn't know what happened. Severide has an idea, and it all falls back on him.
Bookmarked by InvincibleWarrior
11 Oct 2025
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Matt groaned and pushed back against him. “Hmm...morning,” he said quietly, his voice gravelly with sleep.
“Morning,” Kelly replied before he rubbed his nose between Matt’s shoulder blades and pressed a kiss to the back of his neck.
Matt sighed softly. “I could wake up like this every morning.”
Kelly hummed in agreement. He wouldn’t mind either. Waking up to Matt every day sounded like something from a perfect dream.Series
- Part 1 of A Perfect Match, Perfect Somehow
Bookmarked by InvincibleWarrior
05 Oct 2025
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Welcome to the beginning of my Christmas one shots. I thought I'd kick off with some pure smut but never fear I have plans for everything including; fluff, smut, angst and in a variety of situations; new couple, dating, serious relationship and even married with kids. This IS open to requests but get them in quick because I gotta get them written.
Series
- Part 1 of Christmas One Shots
Bookmarked by InvincibleWarrior
03 Oct 2025
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5 times Casey and Severide don't get caught and the 1 time they do.
Bookmarked by InvincibleWarrior
02 Oct 2025
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There are four things Kelly Severide doesn't share: His car, his chair by the squad table, his recliner and most importantly, Matthew Casey. Either you roll with it or spend your entire career in 51 sweating your ass off while he glares at you.
It shouldn’t really be a difficult decision.Bookmarked by InvincibleWarrior
23 Sep 2025
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With your fingers in my mouth (I fail to see your faults) by mi1kc0ffee
Fandoms: Chicago Fire
21 Sep 2023
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He’s not surprised to see that his bed partner is a blonde– he’s got a thing for blondes, sue him– but it’s such a familiar head of blonde hair he has to do a double take.
Because there’s no way–
Whoops.
Or, Kelly sleeps with his ex. His ex's girlfriend won't be happy.
Bookmarked by InvincibleWarrior
22 Sep 2025
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Casey’s tired and angry and just wants an olive branch. Severide’s stubborn and unyielding. Can they ever find their way back?
Bookmarked by InvincibleWarrior
14 Sep 2025
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It takes a real shitty person to leave a baby on someone's doorstep in the middle of a Chicago winter.
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Matt sighed, but grabbed the envelope they've avoided thus far and pulled out the documents. Looking at the birth certificate, he showed the other two adults what he saw.
There, under birth father, it said, Kelly Severide .
And as far as the squad lieutenant went, that was that.
“Welcome home, Lizzie.”
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Or, the one where Kelly and Matt co-parent that no one asked for.
- Language:
- English
- Words:
- 23,479
- Chapters:
- 14/14
- Comments:
- 247
- Kudos:
- 736
- Bookmarks:
- 165
- Hits:
- 18,395
Bookmarked by InvincibleWarrior
10 Sep 2025
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They Fuck
Yayy
Bookmarked by InvincibleWarrior
10 Sep 2025