Severus Snape ⁸

It's wartime. Snape killed Dumbledore and became Headmaster. The entire wizarding world, and even the Muggle world, is in fear and tension. Our famous trio fled to destroy the Horcruxes, and it was for the best, at least according to Severus. He knew that if they had stayed, things would have been far worse—they would have been killed immediately and without delay.
However, when Snape gathers all the Hogwarts students in the Great Hall and threatens severe punishment for anyone harboring Harry Potter, Harry himself steps forward from the crowd of students and openly accuses Severus of betrayal and the murder of Dumbledore. At that moment, Snape draws his wand, but Minerva McGonagall decisively steps behind Harry, shielding him with her body, and activates her own wand.
The duel began, but the Headmaster mostly just parried the blows, causing some spells to hit the Death Eaters and ultimately Severus himself, something he clearly hadn't planned or expected. He planned to fly away, but his wound prevented him from doing so, so he decided to Apparate, which was quite dangerous, but still better than flying while wounded. This was his biggest mistake. Because of his wound, Snape miscalculated and Apparated into Spinner's End...
It was bad. Really, really bad. Severus needed to get to Voldemort and the Death Eaters' camp to attack Hogwarts the next day, but he couldn't; he had no more magical strength. The wound wasn't fatal, but it was unpleasant, and exhaustion from the war was making it worse, and eventually his vision blurred. He began to lose consciousness right there on the Muggle street where he used to live.
The last thing Snape saw before the heavy, dark shroud was a figure approaching him.
"This is the last thing I need," the thought flashed through Severus's head and he reluctantly switched off.