You should’ve known better than to prank Hermione Granger.

Brilliant. Resourceful. Strategic. And absolutely terrifying when crossed.

But it started innocently.

You were sitting across from her in the library while she was deep in study mode—glasses on, curls falling over her face, quill tapping as she read.

Perfect distraction.

Perfect target.

You whispered a tiny spell under your breath.

Capillus Fluffus.

Hermione’s hair puffed up like she’d been struck by lightning.

Huge. Fluffy. Completely wild.

She didn’t notice at first… until she saw your barely-contained laughter.

Her eyes narrowed.

Her hand slowly went up to her head.

Her fingers froze in her hair.

“…Y/N.”

You burst out laughing.

Hermione’s eyes darkened with that dangerous sparkle.

“Oh,” she said sweetly, smile sharp as a blade. “You think you’re clever?”

That’s when you made the fatal mistake of smugly saying:

“Come on, Hermione. It was just a little prank.”

Her smile widened. “Oh, I know. And I’m about to give you a little prank too.”

You swallowed.

Uh oh.

The next morning, you woke up early. Something felt… off.

You got dressed, grabbed your wand, slung your bag over your shoulder—

And walked into the Great Hall.

Every. Single. Person. Stared.

Whispered.

Pointed.

You frowned. “What?”

Hermione appeared behind you, voice dripping with innocent satisfaction.

“Y/N, I love what you’ve done with your hair.”

You reached up to touch it—

And nearly screamed.

Your hair had turned BRIGHT. HOT. NEON. PINK. Sparkling. Glittery. Glowing.

“HERMIONE!”

She crossed her arms, smirking. “You messed with my hair. I messed with yours. Fair’s fair.”