Expecto Patronum
by JessalynMichele, Severitus812 (JessalynMichele) on AO3
Summary
Harry Potter has magical power that has never been seen before, an ever growing gang of powerful and brilliant allies, and enough cunning and strength to face whatever comes his way this year.
Unfortunately, Harry Potter also has mental illness, a tendency for idiocy, powerful enemies, and a reckless streak that has taken at least ten years off Severus Snape's lifespan so far- so Severus enters the year with more reservations than his foolish ward does.
Alliances will be tested, lines will be drawn, and Hogwarts is beginning to feel like a battlefield more than a school.
Which, in Harry's opinion, is perfectly brill.
Welcome to Year Five.