I will tell you now that 99.9% of these ship Sherlock/John. Just a heads up.
Also, a lot of the fics I rec are AUs, but I just want to let you all know beforehand that all of them are incredibly in-character. In fact, I’d say the most in-character Sherlocks and Johns I have seen in fics are from AU fics, so please give them a chance.
The Last Drop by Phyona: Sherlock and John decide to fend off boredom with a night of heavy drinking.
A Love With No Name (series) by cagedwriter61: (WIP?)(Asexual!Sherlock) Sherlock and John love each other, despite the total lack of sex.
Let’s Make a Bed Out in the Rain by theimprobable1: John is devastated after his long-term girlfriend leaves him. Sherlock helps him through it.
The Heart in the Whole by verityburns: Events after The Great Game leave Sherlock dependent on his best friend and colleague. But John has a secret of his own.
Parallel by brbsoulnomming: Written for the prompt: There’s a case at a secondary school/University, some series of threats or string of bizarre murders that has the entire campus shaken. In the course of the investigation, Sherlock and John meet two students. One is well liked if not popular, athletic, intelligent without showing off, involved only because they were close to a victim or witnessed something important. The other is a loner with no regard for social norms, an insufferable genius, always in the chem lab, and involved because everyone, including teachers/professors, think they’re behind everything.
Sherlock and John are responsible for these two meeting. And, because they both want to help with the investigation, they get to watch them become friends and fall a little in love. And that makes them feel things about themselves that they’ve been working very hard to not feel, thank you.
One Heart Walking by sorion: He does have a heart. And it’s walking around right in front of him.
34 Minutes by bendingsignpost: An experiment in eye contact.
He Thought Wrong by sirducklumps: John Watson had kissed only one boy in his entire life and he was sure it would stay that way.
Fit to be Tied by tsukinoblossom: Sherlock’s undone bowtie prompts John to do something very inappropriate at a formal function.
The Things You Hide by verityburns: Sherlock and John have been working and living together for nearly a year, each finding the other’s friendship to be the one thing they would not risk or want to live without. Until something happens to disturb the status quo…
I Just Had Sex by pennydreadful: Sherlock just had sex and he’s going to make sure everyone knows. (Such a funny fic!)
Locked Up by MyPrivateLaughter: John and Sherlock have managed to lock themselves in a murderer’s basement. No windows, phone signal or light switch. Not good. Sherlock however sees this is the perfect time to uncover the cause of John’s ‘angst’. Is he prepared for the discovery?
Performance in a Leading Role by Mad_Lori: Sherlock Holmes is an Oscar winner in the midst of a career slump. John Watson is an Everyman actor trapped in the rom-com ghetto. When they are cast as a gay couple in a new independent drama, will they surprise each other? Will their on-screen romance make its way into the real world?
The Art of Seduction by flawedamythyst: AU in which Sherlock treats sex like he does crime in canon. Inspired by Queer As Folk UK, but it very quickly went its own way.
In Search of A Word by queenfanfiction: There is a new concertmaster at the London Symphony, and John Watson is starting to fall a little bit in love with both the music and the man making it.
The Theory of Narrative Causality by falling voices: (This may be a bit confusing to read if you don’t understand LiveJournal) Sherlock and John are BNFs in Sherlock Holmes fandom. Together, they fight crime. (Always.) And write porn, incidentally.
The Pull of One Magnet to Another by ellie.hell: Mummy has arranged Mycroft’s marriage with an ex-army doctor. However, John meets Sherlock first, and sparks fly.
John Watson, Bachelor by Rayonea: (WIP) For those of you who aren’t up-to-date on their Reality TV schedules, Monday night is The Bachelor night. This season, John Watson is the bachelor. Every Monday evening, there is a new episode.
Making the Connection by JessamyGriffith: (WIP) Sherlock is on detox, and bored. He calls a phone sex line to test a hypothesis. He gets John. Sherlock is intrigued, and calls back several times. But the experiment isn’t going quite how Sherlock predicted…
Chameleon by velvet-mace: (WIP) Written for This Prompt: In a world filled with Sentinels with heightened senses, strength and endurance, and Guides, with seductive empathy, who knew that seeming “ordinary” could be John’s greatest strength.
Collared by velvet-mace: (WIP) Written for This Prompt: In a world where the British Empire is still strong and slavery is her economic backbone, John has become a terrorist for the abolitionist movement. He is caught by Mycroft, enslaved, and given to Sherlock for training. The goal: To test a new kind of slave collar with the power to break even the strongest willed fighter. One that will make even John learn to love being a slave.
How to Build a Heart Out of Ashes by Teumessian: (WIP) In an AU where a small number of the population become Changelings at a young age, at 17 John Watson believes he’s destined for Normal life, but then the Change takes him and he is sent to the Baker Institute. There he meets Sherlock Holmes. John/Sherlock