Post-S7, Pre S8.
Buffy leaned through the door, following the sound of giggling. Leah and Dawn were sitting at a computer, reading something that apparently made them burst out snickering every few seconds.
"Hey."
"Hey, slugabed." Dawn didn't bother turning aroud. Leah gave her a quick smile, then peered at the screen again.
"'Slugabed'? You made that up just now, didn't you."
A pause with lots of silence in it. Buffy sighed and leaned against the castle wall. "So what's so funny?"
"Old predictions for book six. Willow finally got fed up and made the wireless work by magic."
"Book six of....?"
"Seven."
Buffy took a deep breath, but Leah jumped in. "It's a site with old predictions for the Harry Potter book that came out last year. Stuff like," she read off the screen, "The new DADA professor will be an injured Auror. Draco will ask for Harry's help to rescue his father-"
"None of which actually happened." Dawn broke in. "Which you'd know if you actually read the books."
"I spent seven years reading big thick books full of magic on the job! Why-"
Dawn made a strange noise.
Buffy glanced over at her sister, who was staring at the screen with a look of bug-eyed shock. "Dawn?"
Leah gave the younger girl a puzzled look, then peered at the screen and started reading. "Partway through the book, Harry discovers that Hermione has been dating....Luna?" She blinked, then kept reading. "At the end of the book, Luna is killed in a Death Eater attack, causing Hermione to go on a homicidal rampage, culminating in her trying to destroy the world with the Immanent Eschaton spell. Ron talks her down, while Harry and Ginny fight a dragon." She looked at Dawn, confused. "Well, that didn't happen."
Buffy was feeling kind of bug-eyed herself. "A dragon?"
Dawn looked over with her eyebrows raised and nodded. "A dragon."
"I swear I saw a dragon...." Willow singsonged as she came through the door. "Hey Dawnie. How's the connection?" There was another pause while Buffy and Dawn stared at her. "What?"