A/N: First and foremost, for the lovely Sanchie. I hope you enjoy the collection, darling. Also for the Mount Potter Competition (14/55, prompt: "You give me a headache.")

Rolf looks over his notes, his teeth worrying the feather end of his quill. There are so many new discoveries to add to his grandfather's work, but he doesn't know where to begin.

"You give me a headache when you do that," Luna says softly, sitting beside him and plucking the quill from his fingers.

"Do what?"

She scrunches up her face, placing the quill in her mouth. Splotches of pink mark her pale skin, as though concentrating so hard is a physical strain.

"Luna?"

"That," she says, her face relaxing. She massages her temples with a wince.

"I was thinking! It's important research, you know. Very serious," he says defensively.

"Daddy always says that you shouldn't force creativity. It's like a Summoning Charm for Wrackspurts, you know," she says, her tone matter of fact as it always is when she talks about strange, impossible things. "They sense you trying, and they latch on."

Rolf has to try not to laugh. Once, he'd patiently explained to Luna that there's no proof that Wrackspurts exist. She'd countered him by saying there's no solid proof that they don't exist. Ever since, he's simply smiled along with her whenever she mentions a favorite theory or creature.

"Right," he says, struggling to keep a straight face. "But I still need to write this."

Luna tosses the quill aside and grabs his hand, pulling him to his feet. "I know the perfect cure."

He makes a face. "I don't have to drink that tea again, do I?"

"Don't be silly. That's just for enjoyment," she answers. "The cure is to run around, dance, and shout."

Rolf raises his brows, searching her face for any signs that she might be joking. As far as he can tell, she's not. "How does that help?" he asks curiously, letting her lead him through the door.

"I don't know. But it's better than sitting around and looking serious," she says, releasing his hand and sprinting forward, her arms raised over her head.

Rolf watches her, chuckling to himself. He doesn't know if this will do anything, but he doesn't care. Any moment shared with Luna is worth it.

After a moment, he darts after with a yell, grabbing her by the waist and sending the two of them tumbling in a flurry of tangled limbs and laughter.