What happens when Professor Flitwick falls ill and Professor Snape ends up teaching his third-year Charms class? Set during GoF. One shot. Nothing except the idea is mine. Characters, setting, inspiration, etc. are all courtesy of J. K. Rowling.
Miserable and lonely amid unpleasant reminders of his childhood, Sirius isn't happy when Harry, Ron, and Hermione tell him not to come to Hogsmeade to see them. Fortunately, Remus arrives to help him sort things out. Written as part of my Wolfstar headcanon, but there's no distinct mention of it in this fic. One-shot. CW for mention of child abuse.
When Sirius learns that Harry has been cleared of all charges and will be going back to Hogwarts for his fifth year, he's happy for his godson. Sort of. It takes an honest conversation with a certain werewolf to come to terms with what he's feeling. Some Wolfstar, but this isn't an especially romantic scene. One-shot.
The students of Hogwarts are taking a field trip to a Muggle town, and they all have partners assigned for the trip. What happens when Harry Potter gets stuck with his arch-nemesis, Draco Malfoy?
When Ljota Lokidottir leaves Asgard and her father behind, she finds herself stranded in Midgard with no friends, no plan, and nowhere to go, until she stumbles across a curious family and finds a kindred spirit among them. Primarily Marvel and Sherlock, with bits of Doctor Who, Supernatural, and Harry Potter thrown in. Credit goes to the owners of those franchises.