Wand for a price.

Luna smiled "I'll give you your wand back and stay quit about this if you agree to meet me at the Room of Requirements at midnight and do whatever I say when there. Deal?"

"What? No! Give me that!" Hermione shouted as she reached to grab her wand.

Luna backed up slightly bending the handcrafted wood.

"Just give me your word and I'll give it right back. Or I might slip." Luna promised as she bent the wand a little more.

"Stop!" Hermione demanded.

With the water she doubted she could reach the crazy blonde before her wand was snapped so she had to be careful. She was perplexed and pissed at Luna's stranger behavior. Maybe lying could end this.

"Fine." Hermione lied.

"Say the words and shake on it." Luna replied as she extended her hand. "I promise you'll enjoy this."

Hermione practically growled as she grabbed Luna's hand.

"I'll meet you in the Room of Requirements at midnight and promise to do whatever you say there."

A bright flash of light came over the two naked girls.

Hermione pulled her hand back. "What was that?!"

"A little something I cast when you were playing." Luna answered as she moved out of the water, her naked backside to Hermione. "You won't like what happens if you back out now."

"What did you do!?" Hermione shouted.

Luna turned back around. "Keeping your word." She smiled then tossed the wand back into the water, before skipping to the exit still naked and dripping wet.

Hermione grabbed her wand ready to hex the blonde but she was already out the door. Frustrated and irate Hermione dressed quickly. She had a sense of dread at what spell she was now bound to.