2. It's a long story
Harry tapped me on the shoulder. I sighed and slipped away with Hermione and Ginny, following Harry to the common room. I walked blindly, happy but depressed at the same time. As my sister and friend walked behind the invisible Harry, I looked at the castle. The entire front wall had been torn down, there were charred ash marks on the floor, windows were shattered, and bodies were strewn across the floor. I shuddered, glad that I wasn't one of them, or Harry, Hermione, Ginny, Percy, Charlie, Bill, Fleur, Luna, Neville, Mum, Dad, George... but Fred was one of them. The dead. If only my brother's killer hadn't died. I thought of all the torture methods in the spell books, striving to use them on that bastard.
We had reached the Gryffindor common room. The red and gold hangings were burnt, and dangling from the walls. The fire had gone out. Otherwise, everything was in okay condition. Harry threw off the Invisibility Cloak, and grabbed four chairs. We all plopped down in them gratefully. I put my arm around Hermione, and Ginny put her head on Harry's shoulder. I was too tired and grief-stricken to care.
"So," Hermione finally broke the silence. "You killed Voldemort."
Harry smiled grimly. "Yes, I suppose I did."
"How?" Me and Ginny asked simultaneously.
"It's a LONG story..."