Sherlock getting bullied at high school, but he has John there to step in.
Everyone can only see in colour after they have met their soulmate. However the partially deceased seem not to apply to more than the 'staying dead' rule. Or The one where Kieren is trying to find his soulmate but dyeing, and coming back to life, got in the way a bit. More of a universe alteration then an alternate universe fic.
Nico and Leo are circus performers with a difference. The difference being their performances are no trick, they can actually do what they claim. Leo/Nico
Roman shows Emery just how beautiful his marks can be. Roman/Emery
September 1st, the sorting ceremony. Set after Greg must have looked good in all that quidditch leather too. Greg and John 6th year Sherlock 4rd year Mycroft 7th year Goes with Greg must have looked good in all that quidditch leather too, but an be read as a stand alone piece. Mycroft/Greg and John/Sherlock
Kieren's parents find out he borrowed some of Jem's clothes and what follows.
Valentines day at 221B. John/Sherlock
Sherlock stole Mycroft's umbrella, so now he only has a small one to protect him and Greg from the rain. Mycroft/Greg
Carries on from the end of s.3 ep.19. Stiles/Derek
Simon and Isabelle are serial killers, after sourcing their next victim they're going to kill again. Simon/Izzy
Jason/Pythagoras
Magnus/Alec
Fem!leo seeks Nico out at the cemetery. Leo/Nico
Merlin Holmes is getting married. Merlin/Arthur, a bit John/Sherlock if you read it that way
Mycroft cried, once. Mycroft/Greg
Mycroft's first birthday present. Mycroft/Greg
What should have happened when Stephen heard Astrid thinking I love you. Stephen/Astrid
Short clip I've added before Pythagoras wakes Hercules up in season1 ep1. Jason/Pythagoras
Alec was injured in the final battle, now he's gone and all Magnus has is hope. Set in City of Glass, but off cannon. Past Magnus/Alec
Sherlock returns to Baker Street, but who answers the door? Post Reichenbach, Pre Empty Hearse. Kinda John/Sherlock