Ginny picks up a skill, meets Dumbledore's Army, and takes her own joke a bit far. (Preview, seeking beta!)
stream of consciousness, Severus Snape. (canon compliant)
The ceasefire was a sick joke. (hc, canon compliant coincidence)
Harry Potter is bad at feelings, or-it's sixth year. Snape is where he wants to be and Lupin isn't. Neville and Harry practice Defense Against the Dark Arts while he waits for reality to set in, but sometimes people learn the wrong lessons.