"Get it off! Get it off!" Ginny Weasley was screaming from the balcony of her room at the Hilton Diagon Alley. She was jumping about, mostly undressed, shaking the hand that held her engagement ring from Harry Potter. Unfortunately for her, the man she was with was most definitely not Harry Potter, which became evident when Aurors Potter and Weasley showed up to take care of the disturbance.
Ron looked at his sister's lover with disdain. "For Merlin's sake, Ginny, Zacharias? I mean, really. What does he have that Harry doesn't?"
"Time for me," Ginny huffed, upset at being caught out.
Harry returned from the lower levels where he had gone to get a cage to put the unknown small, furry, horned creature that had clamped on to Ginny's ring finger with very sharp little teeth.
"You didn't bother reading our betrothal agreement, did you, Ginny?"
Zacharias started to look bothered.
"No, Harry. My brother wrote it. Why would I?"
"There was a fidelity clause to the use of the funds in the joint account. I hope Zacharias has the funds for your new wardrobe, your dinners out and your little love nest here, because I've just activated the breech of agreement clause."
Ginny wailed as her engagement ring disappeared. She wailed even louder when she got the Gringotts bill shortly thereafter for most of the contents of her personal vault. Ron finally hit her with a silincing spell when she got the notice that she was terminated from the Holyhead Harpies for violating the ethics clause in her contract.
Harry and Ron walked out with their furry capture. "I'm sorry, mate. I thought Ginny was better than that."
"Don't worry, Ron. We were heading toward a breakup anyway. I'm just glad I found out about this before we got married and had children."
Ron nodded sagely and sadly. "I guess my fantasies of you marrying Ginny and me marrying Hermione were just that."
"Ron, you will always be my brother, whether I am married to your sister or not. And I don't think you are ready to take on Hermione's beau."
Ron laughed. "Nope. I like being in one piece. What are you planning to do with the little fuzz-ball?"
"I'm taking him to Luna. Maybe she knows what he is."
"Good idea, mate. I'm heading to the Burrow to let Mum know what happened."
Harry walked into Luna's rare creature shop with the cage. "Luna, love, can you tell me what this is?"
Luna came out from the back of the store. "Hi, Harry! It is so good to see you! Oh, and your aura is clear of that dark spot it had. Did something happen?"
Harry laughed. "You can say that. This little guy attacked Ginny while she was having a tryst with Zacharias Smith at the Hilton."
"Hmmm. Soft white fur, claws, pointy teeth, and a crumpled horn. Oooh! Harry! This is a Crumpled-Horned Snorkack!"
"Luna, why would a supposedly extinct or non-existent animal attack my ex-fiancee?"
"Oh, they are attracted to magic, and you have plenty of that, and this little one decided to defend you. I think you have a familiar now. And they aren't non-existent. They are just mostly invisible."
Harry stared at the little creature that had crawled up Luna's arm and was contentedly sitting on her shoulder, nibbling on her radish earring.
"Luna, do you want to come over and help me set up something for it to live in?"
"Can we have pizza?"
"Let me close up, and let's go!"
Only Luna was close enough to hear the little animal purr contentedly. She didn't tell Harry that Crumple-Horned Snorkacks only purred for their wizard's true mate. She followed the man she had been in love with for years with a smile. It was a very good day.
Many thanks to kyria of delphi for the beta!
Prompt from LaMuseAmusant: 6. Luna gets actual proof of the existence of the Crumple-Horned Snorkack when a former schoolmate runs afoul of one.