Ok, had this idea for quite a long time so writing it today. Enjoy!
"So this is Fairy Tail! So cool!" Lucy exclaimed, looking at the guild. She drew a deep breath as Natsu pulled her in.
"I made it! It's Fairy Tail!" Lucy exclaimed to herself as she looked at the different members of the guild doing their own things. But Natsu and a guy named Gray started fighting and immediately chaos ensued. Soon enough, Lucy got tired of the chaos.
"Is there no one normal in Fairy Tail?" She said to nobody.
"Oh, are you a newcomer?" Lucy turned to see a girl with white hair that reached to right above her chest and beautiful blue eyes.
"Ah, yes! I'm Lucy and I want to join Fairy Tail!" Lucy stood up quickly and bowed.
"I see. You should let Master know when he returns. I'm Lisanna, nice to meet you." Lisanna smiled.
"Nice to meet you too, Lisanna!" Lucy smiled. Finally, someone normal!
"Natsu, stop fighting already!" Lisanna scolded.
"But, Lisanna…"
"No buts! If you keep acting all high and mighty like that, no girl will fall for you!" Natsu stopped but went to a corner and sulked.
"Lisanna, where's my fish?" Happy flew over to her.
"It's at the counter, Happy." He immediately flew over but got stopped when Lisanna fake-coughed.
"Happy, are you forgetting something?" Happy flew back to her and gave her a hug.
"Thank you, Lisanna! You're the best!"
"You're welcome, Happy." Makarov immediately put a stop to the fights while Lisanna led Lucy to the table where she got Fairy Tail's mark stamped on her right hand.
"Look, look, Natsu! I got my mark!" Lucy felt really excited.
"Ah, good for you, Luigi." Natsu muttered, still sulking.
"It's Lucy!"
"Come on, Natsu, stop sulking. I'll go cook something for you, ok?"
"Alright! You're the best, Lisanna!" Natsu grinned as he immediately ran to the kitchen with Lisanna laughing behind him.
"Instant recovery?!" Lucy's eyes bulged out. After the guild introduced themselves to Lucy, they went back to their daily routine: doing whatever they want to do. I'm still a rookie but Fairy Tail is the best! They had just returned from finding Macao when terrible news reached their ears. Loki ran out of the guild after hearing that Lucy was a Stellar Spirit mage.
"Don't mind him. Loki can't stand Stellar Spirit mages. It's rumoured that he had a bad experience with one." Lisanna explained. It wasn't long before Loki returned with the terrible news.
"This is bad! Erza's back!" Everyone immediately prepared themselves mentally and fell silent when the door opened to reveal a girl walking in with a giant horn from some giant monster. She then reprimanded the guild before asking Natsu and Gray to assist her in a quest. After they defeated Lullaby and did some destroying in the process, they returned to the guild, only to fall asleep from Mystogan's magic. When they woke up, Laxus mocked them for not being able to stay awake to see how Mystogan looked like. But when Natsu tried to go up to the second floor to fight Laxus, Makarov punched and stopped him.
"Why shouldn't we go up to the second floor?" Lucy asked.
"That's because the second floor has quests so difficult that the slightest mistake would mean death, S-ranked quests."
"S-ranked quest?" Lisanna nodded.
"Only the strongest mages can take on those quests with Master's permission. Going on them requires the presence of an S-class mage. Including Mystogan, Laxus and Erza, only five of us can take on those quests. Well, it's four now, actually." Suddenly, just by Lisanna's statement, everyone's smiles disappeared. Lucy decided not to ask about it.
"So S-class mages are the strongest." Lisanna nodded. That night, Natsu and Happy stole an S-ranked quest and got Lucy to join them by telling her the reward. Naturally, they got scolded and punished by Erza and Makarov when they returned and the reward money was used to repair whatever damage done during the quest.
"Ah!" Lucy fell down, books tumbling after her.
"I'm sorry!" Lisanna just smiled.
"It's ok, be careful. There are a lot of books here after all." Lucy was picking up the books when a picture flew out of one book.
"Lisanna, what's this?" Lisanna smile fondly at the picture.
"That's… That's a picture Reedus drew when Happy was born. Back then, Natsu and Gray would fight."
"So…no difference from now?"
"Yup, but there was another pair."
Flashback
"Die, Erza!"
"I'll make you cry, Mirajane!"
Pause Flashback
"Eh?! She actually dared to fight with Erza?!" Lisanna chuckled.
"Yes, and their strength are actually on equal terms."
"Are you serious?!"
"Yup. The guild feared them too, even Master."
"Wow."
Continue Flashback
"You cranky bastard!" Mirajane kicked Erza.
"You midriff showing bastard!" Erza punched Mirajane.
"You prickly woman!"
"You bony woman!"
"Fatty!"
"Four Eyes!"
End of Flashback
"Woah, she sounds like quite an interesting character. Hm? Wait, but I didn't see her just now?" Lisanna's smile turned sad.
"That's because…"
"She's dead. She died two years ago, on an S-Class Quest." Lucy looked up and saw Erza leaning against the door frame with a sad smile on her face.
"She and I were rivals. We may have hated each other, fought a lot with each other, but the truth is we shared a bond stronger than any other. Even now, I kinda miss her and the fights we used to have together. Oh, nevermind me, I should go now and stop distracting you two. Lisanna can tell you the rest of the story." Erza said before walking off.
"Should I continue?" Lucy turned her attention back to Lisanna.
"Yes please!" Lisanna chuckled softly.
"And then…" In the same night, Lisanna tossed and turned in bed as the image of a girl who looked like her appeared in her mind, smiling with her hands on her hips. The girl had Lisanna's white hair, with a large strand covering her forehead freely and had most of her hair tied, in a high, large ponytail reaching to her waist, on the back of her head by a massive dark ribbon. She wore a gothic-looking, overly revealing outfit matching the tomboyish personality she obviously had, as seen from her pose. (She was wearing what she wore when she fought the Beast with Elfman and Lisanna.)
Ok, I know, I skipped a lot (and made Lisanna's hair a little longer) but I was lazy and couldn't be bothered to describe the events in detail so this chapter is rather short but please review!