002. Key
Mirajane, Lucy – "This is what they call an invasion of privacy, Mira!"
"Hi, Natsu. Can I get you something?"
"Yo, Mira! You know that new girl who joined the other day?"
"Hm? Oh, Lucy, right? I remember stamping her hand. I heard she found herself an apartment on Strawberry Street already."
"Whoaa, seriously? I gotta go check it out! D'you have her key?"
"As a matter of fact, I do. The spare just came in. Here you go! Don't lose it now."
"Heheh, you're the best, Mira!"
"Gray, your clothes."
"Huh? Aah! When did that happen?!"
"But you didn't come over here just for me to tell you about your clothes, did you?"
"Uh, no. I heard you had Lucy's spare key, so I was wondering if I could borrow it for a bit to go tell her something. I bet she already forgot the flame brain and Erza were going to fight today."
"Oh my, did they start already?"
"Nah, not yet. But I figured Lucy wouldn't want to miss this."
"Here you go then!"
"Mira, I need Lucy's key."
"You're direct as always, Erza. Sure, but may I ask what it's for?"
"I-I… I need to return something of Lucy's that I borrowed. It was absolutely nothing improper, of course! Although I do wonder on what sort of occasions you would wear that kind of underwear…"
"…Oh dear."
A vein twitched on Lucy's temple as she watched the small key swing gently from Mirajane's hand.
"How did you even get a spare of my key without me knowing?!"
A/N: Fun fact, Mirajane having a copy of Lucy's key and lending it out to the rest of the team is actually canon, somewhere in a volume Q&A.