Hello! So here is that story I promised I would update. Sorry it took so long. I've been really busy. I decided it will be a muli-chapter but not a very long one.

Disclaimer: I of course don't own LWD but I do like the show and fanfiction related to it. =)

I hope you like it.

Life With Casey (An Alternate Reality)

Chapter 1

Purple hair

Derek smirked as he sat back in his recliner pretending to watch the TV. His stepsister, Casey, had just gone upstairs to have a shower and was in store for a little surprise. He guessed it would take about five minutes before she screamed his name, breaking it in two the way she always did when she was angry with him. He checked the time on his phone, one minute to go...

"DER-EK!"

Ahh. Music to my ears. Derek leaned back further in his chair with his hands behind his head and smiled triumphantly. Another prank successfully pulled off.

"Derek, this time you have gone too far!" Casey's voice shouted from the top of the stairs.

Derek turned in his chair to see his stepsister clad in only a white towel, her body dripping wet... oh and her hair was purple.

"Nice hair, Barney." Derek laughed.

"This isn't funny! How could you do this?" Casey shrieked as she made her way down the stairs and stood in front of him.

Derek shrugged nonchalantly, "There was some dye left over from the bet Lizzie made with my Dad and Ed, so I thought I'd put it to some good use."

"By putting it in my shampoo bottle?" She seethed through clenched teeth.

"Of course. What better way?" He grinned up at her.

Casey suddenly bent down and grabbed him by the scruff of his shirt, "You better hope this washes out! I have a date tonight with Truman and there is no way that I am going anywhere with purple hair!"

"Then may I suggest you get washing it?" Derek smirked, trying to ignore the fact that he could see Casey's cleavage from where the towel was wrapped tightly around her.

She's your stepsister, dude, don't even go there. He chided himself.

Casey released him and groaned in frustration, "You know, some day I am going to get you back so bad that you'll wish you'd never messed with me."

Derek laughed, "Maybe in another life, Spacey."

"We'll see about that." She said and then turned to head back up the stairs.

Derek chuckled to himself as he watched her retreat back to the bathroom, "A world where Casey pranks me... Now that I would love to see."

# # #

That night at dinner Derek grinned across at Casey who still had bits of purple in her hair. "Thanks to you I had to cancel my date with Truman." His stepsister scowled at him.

"Lucky Truman." Derek sneered.

"Derek." George glared at his son from where he was seated at the head of the table. "This time you have gone too far. How would you like it if Casey had dyed your hair purple?"

Derek laughed, "Casey could never pull off a prank like that. She doesn't have the guts."

"Well how's this for guts? You're grounded for two weeks." His father replied with a smug grin.

"Two weeks? Come on, Dad, I'm eighteen, do you really think it's necessary to ground me?"

"As long as you live under my roof, I'll ground you all I want, eighteen or not."

Casey smirked across at him as she bit into her food and Derek kicked her foot under the table before excusing himself to his room.

# # #

Derek groaned as he flopped down on top of his bed and grabbed a magazine from his shelf. He couldn't believe his dad had grounded him for a harmless prank. It's not like I put permanent dye in her shampoo bottle. The purple should come out after a few more washes. No big deal. He thought to himself. And besides, I think it looked good on her. I don't know why she thought otherwise. Nothing can make Casey unattractive. She's beautiful. Derek's eyes widened. Did I just call Casey beautiful? That is so wrong! I can't be thinking that about my stepsister!

Derek opened the magazine and began flipping through its pages absentmindedly, trying to focus his thoughts away from Casey, but failing miserably. Living together for three and half years had definitely changed his life. He had to admit that a bit of her had rubbed off on him and likewise for her, considering she'd just flashed him his trademark smirk down at the dinner table.

He thought about what his father had said, "How would you like it if Casey had dyed your hair purple?"

Casey had been known for pulling off a few pranks over the years but they were never as good as his. Then Derek began to wonder what it would be like if Casey was the prankster and not him...

Ha! Like that would ever happen! Derek laughed out loud.

Suddenly Derek's vision became clouded and darkness surrounded him.

# # #

"Derek, get up! Derek, you're going to be late for school!"

Derek opened his eyes to see Edwin standing over his bed with a concerned look upon his face.

"W...what?"

"She's done it again, D." Edwin shook his head. "You're lucky I'm a nice brother and warned you before it was too late."

"What are you talking about?" Derek asked as he rubbed the sleep from his eyes. He sat up in bed and stared around his room in confusion. "Um... Ed... Where am I?"

"You're in your room. Where do you think you are?"

"B...but this isn't my room..."

Derek looked around and thought he recognized the room he was in, minus the academic trophies and lame posters on the walls. This room looked like it belonged to some nerd, not Derek Venturi.

"Derek, are you feeling all right?" Edwin's voice cut into his thoughts.

"Wait a minute..." Derek finally realized where he was. "This is Casey's room... except a little different..."

"Um... no... This is your room, Derek. Casey's room is next door."

"No, my room is next door."

"Derek, what are you talking about? This has always been your room ever since we moved in with the McDonalds."

"Um... Ed, it's the other way around. The McDonalds moved in with us."

Edwin groaned, "Whatever, Derek, I don't have time for this. I have to get to school before I'm late as well."

"What do you mean?"

"Casey set your clock wrong. It says it's seven-thirty, when it's actually eight-thirty."

Derek's eyes went wide, "I'm late for school?"

"That's what I have been trying to tell you."

"Wait... I'm late for school... Why would that bother me?" Derek shook his head.

"Because you hate being late for school. You've had perfect attendance since pre-k."

"I have?"

Edwin groaned again, "Look, Derek, I don't know what is going on with you today but I have to go now. You're welcome for waking you up. See you later." Edwin said before leaving the room and closing the door.

"I'm dreaming right?" Derek spoke aloud as he looked around the room again. "There is no way that this is my room and that Casey just pranked me." He decided to try pinching himself but nothing happened. Then he slapped himself but still nothing happened. "This is ridiculous! There is no way that this is real!"

Derek stood up and began pacing the room.

"I am losing my mind. How did I end up in Casey's room?" Derek's eyes lit up as he jumped out of bed and rushed into the room next door.

"What the..." Derek stopped in his tracks. "This is definitely not my room..."

The walls were painted purple and blue and had posters of various bands and dance crews hung all around.

"There is no way that this is Casey's room either... This room is actually pretty... cool. Definitely not Casey style."

"Smerek, what are you doing in Casey's room? You know no one is supposed to be in there right?"

Derek turned around to see his little sister, Marti, standing there with a shocked expression on her face.

"This isn't Casey's room." Derek said as he knelt down to Marti's level.

"Um... Yes it is... and aren't you supposed to be at school by now?"

"Smarti, please, tell me the truth... What is going on here?" Derek begged as he gripped his sister's shoulders.

"What is going on is that you are acting very strange... oh and Casey wanted me to tell you that she took your car."

"She took my car!"

Marti nodded as she made her way down the stairs with her back pack and Sir. Monks-a-lot.

Derek made his way back into the room that was supposedly his and walked to the dresser to put on some clothes.

"Where are my pants?" Derek wondered aloud as he searched each one of the drawers. "And what the heck kind of wardrobe is this?" Derek asked as he pulled out a blue and yellow sweater vest. The drawer was full of them in all sorts of colors. "I would never wear one of these." Derek said in disgust and threw it back in.

"Something very strange is going on here..."

# # #

Derek ran into the school with a few minutes to spare as he stopped at his locker to grab his science textbook. His locker didn't even look the same as he opened it up and peered inside. It was actually clean...

"Hey, D, you made it just in time." A familiar voice said as Derek closed his locker to see Noel Covington standing there with a grin.

"Uh... yeah..." Derek gave him a strange look.

Why the heck is Noel talking to me? And did he just call me D?

"Let me guess, Casey set your alarm to the wrong time again?" Noel asked with a chuckle.

"Um..." Derek didn't know what to say. All this confusion was making his head spin.

"And, seriously dude, what are you wearing?" Noel tried to hold back his laughter as he looked Derek up and down.

Derek, unfortunately, was wearing really short yellow shorts and a pink t-shirt.

"Somebody stole all of my clothes." Derek grumbled with a red face. "These were the only things left."

"Well maybe you should change into your gym clothes. Anything would be better than what you're wearing now."

Derek nodded and then he realized that Noel was still standing there.

"Uh... Noel... not to be rude... but why are you even talking to me...? I mean... we barely know each other outside of the play we were in together last year..."

Noel looked at him like he was crazy, "What are you talking about? We've been friends since the first day you and your family moved here from Toronto three years ago. Are you feeling all right?"

Derek shook his head with a frown, "What? No... You've got it all wrong. I've lived in London all my life. And I am not your friend either. My friends are Sam and Ralph, among most of the school's population."

Noel started laughing, "Sam and Ralph are your friends? Hahaha! Yeah, right! You mean the same guys who follow your stepsister around like she's a goddess and make fun of you? That Sam and Ralph?"

"What are you talking about?"

"See for yourself, D. Here comes trouble now." Noel said as he pointed over Derek's shoulder with a foreboding look upon his face.

Derek turned just in time to see a very attractive girl walking up to him with a sly grin upon her face. She had long brown hair with purple streaks in it, dark make-up, and she was wearing a short black skirt and a baby blue v-neck top.

"Nice clothes, Nerd." The girl chuckled as she stopped in front of him. That was when Derek realized that he knew this girl standing in front of him.

"Casey?" His eyes went wide and his jaw dropped as he stared at his stepsister in shock.

"Why are you looking at me like that?" Casey snapped as she folded her arms across her chest.

"W... what happened to you?" Derek stuttered out.

"What are you talking about?" Casey glared at him. "You're the one that looks like a freak."

Derek was beyond confused now. Since when does Casey dress like that? Or talk to me like that? This is a dream... it's got to be a dream...

"Casey, please excuse my friend, he's not feeling so great today." Noel spoke up from beside him. "Why don't you just tell Derek where you put his clothes? You don't expect him to go the whole day looking like this, do you?"

Casey ignored Noel as she continued to stare down her stepbrother, "Seriously, Derek, what is your problem? You look like you've just seen a ghost."

"I... I..."

"You're not making this prank any fun." Casey complained. "Your clothes are in the girls change room by the way." She sneered and began walking away.

"Casey, wait!" Derek called out as he grabbed her by the arm.

"Don't touch me!" Casey snapped as she pulled away from his grasp and turned to scowl at him. "What do you want?"

"This doesn't make any sense... Why are you acting like this?"

"Acting like what?"

"This isn't you..."

"Are you on drugs or something? I bet your dad would love to hear that." She grinned with a raised brow.

Derek shook his head, "No... at least I don't think I am... I'm so confused..."

"Hey, are you harassing, Casey?" A familiar voice shouted from behind Derek.

Derek turned around to see Sam and Ralph standing there with not so friendly expressions on their faces.

"Hey, guys! You wouldn't lie to me! Tell me what's going on here?" Derek almost begged through wary eyes.

"What's going on here is that you better not lay your grubby fingers on Casey again." Ralph growled at him.

Derek turned to look at Sam with a hopeful gaze, "Sammy, come on, we've been friends since pre-k, tell me this is all a joke."

"The only joke here is you, Venturi," Sam scowled with disgust as he shoved Derek into his locker. "And don't ever call me Sammy again!"

Derek was terrified. Sam had never talked to him that way!

"Leave him alone, I don't think he's feeling well today." Noel said as he stepped between them.

"So why don't you take your little boyfriend to the nurse, Covington?" Sam sneered and high fived Ralph as they began walking away.

Derek shook his head and rubbed his eyes. This cannot be happening...

Suddenly the bell went off and a part of Derek was worried about being late to class. He shook his head again. Why would I be worried about being late to class? I do it all the time.

"You sure you're going to be alright?" Noel turned around and asked with a concerned face.

"Seriously... Why do you care?" Derek frowned.

"Because you're my friend..."

Derek groaned as he ran his hands through his hair, "Look, I don't know what is going on here... but you are not my..."

"Derek?"

Derek turned to see Emily Davis standing there with a huge black duffel bag in her hands.

"I'm sorry I interrupted but I thought you might want these back." Emily smiled as she handed the duffel bag to Derek. "I found them in the girl's locker room."

"Um..." Derek took the bag, which was heavy, and stared at it in confusion.

"It's your clothes. I'm guessing by the looks of your outfit that Casey had something to do with this."

"Uh..."

"Thanks, Emily." Noel smiled as he shook her hand. "That was very nice of you to return those."

"It's no problem." Emily shrugged as she smiled at Noel and then gave Derek a bemused look. "Well... I'll see you around then... I better get to class."

Noel waved bye as Derek still stood dumbfounded, staring at the bag in his hands.

"Dude, that was kind of rude... You didn't even thank her or say bye." Noel said as he turned back to Derek once again.

"This makes no sense... Casey would never be able to pull off a prank like this." Derek mumbled to himself.

"What are you talking about? Your sister pulls pranks like this all the time, especially on you."

"Step-sister." Derek corrected out of habit.

"I mean... yeah she's hot... but she is evil." Noel continued talking with a shake of his head.

Derek ignored him as he set the bag down and opened it up. He sifted through the clothing with a disgusted face, "These aren't my clothes."

Noel knelt down and peeked inside, "Of course these are yours. How can you not recognize your own clothing?"

"I would never wear something like this." Derek said as he held up a blue and orange sweater vest."

Noel stared at him like he was crazy, "D, you love wearing sweater vests."

"No I don't, and would you quit calling me D?" Derek snapped.

"I always call you D..." Noel looked hurt as he stood up.

Derek growled in frustration as he picked up the bag and slammed his locker door shut, "This is insane!" He shouted as he began making his way down the hall.

"Where are you going? Your first class is the other way." Noel called after him.

Derek ignored him and continued walking without another word.

# # #

Derek stared at his reflection in the bathroom mirror. I still look like me... but somehow I'm not me... He thought as he examined himself a little closer. He'd found a pair of jeans among the clothes in the bag and a blue t-shirt that didn't look too bad, so he'd gone to the bathroom in the school and changed into them.

He turned on the tap and splashed water on his face, hoping it might wake him up from whatever bizarre dream he was having but when he looked back up into the mirror he was still there.

Why is this happening to me?

Derek didn't even bother taking the bag of clothes with him as he walked out of the bathroom. He had a couple hundred bucks in his wallet and decided he would rather buy a whole new wardrobe than walk around in sweater vests.

As he turned the corner of the hallway he wasn't watching where he was going and bumped right into someone.

"Ouch! Watch where you're walking!" The person exclaimed.

Derek recognized the voice immediately and dread filled his mind as he stared into the angry, deep blue eyes of his stepsister.

"Derek?" Her eyes went wide when she realized who he was. "What are you doing wandering the halls during class time?"

"I..." Derek couldn't help but stare at her. He still couldn't get over her appearance. She looked so different.

"I see you found your clothes." She said as she folded her arms across her chest and pursed her lips in amusement. "Where's one of those dorky sweater vests you usually wear?"

Derek frowned, "I've never worn those."

Casey raised her eyebrow, "You know... something just doesn't seem right with you today..."

"You're telling me." Derek scoffed.

"It couldn't be my prank because I do that stuff to you all the time..."

"Since when?"

"Since we first met. Remember, I got my friend to pretend to be me, so that I wouldn't have to meet you." She laughed at the memory.

Derek shook his head, "No, I did that to you."

"Yeah right!" She laughed even harder. "You could never pull a prank on me!"

"I do it all the time, Space-case!"

Suddenly Casey grabbed him by the collar and glared at him, "What did you just call me?"

"Uh... Space case...It's what I always call you...among other names..." Derek choked out.

"You are on drugs aren't you?" She demanded to know as she pulled him even closer and stared into his eyes.

"N-no... I don't know what's going on but I would never..."

Casey let him go and stepped back, "You're right. The perfect goody-two-shoes, Derek Venturi, would never do anything bad." She mocked.

"Who are you calling goody-two-shoes?"

"Oh please, Derek, you never do anything wrong. Your dad could never be so proud of you. All I ever hear is why can't you be more like Derek? You, with all your academic trophies, your straight A's, and perfect attendance record." She scoffed as she continued to glare at him. "Which reminds me... What are you doing in the halls during class time?"

"I didn't go to class." Derek shrugged.

Casey's jaw dropped in shock, "You're skipping?"

"I do it all the time."

"No you don't! You hate skipping class!"

"No, you hate skipping class!"

"I always skip class, you retard!"

"Yeah," Derek rolled his eyes, "just like how you always prank me."

"Seriously, what is wrong with you?"

"You are what's wrong with me! This whole messed up day is what's wrong with me! None of this makes any sense! I woke up in the wrong bedroom; Noel Covington thinks he's my friend; my real friends: Sam and Ralph hate me, and then you... you look like this..." he gestured to her appearance, "and act not... like Casey..."

"What are you talking about? I am Casey."

Derek sighed as he pinched the bridge of his nose in frustration, "You wouldn't understand."

"Are you calling me stupid now?" She advanced on him.

Derek held up his hands, "No, no... I just mean that..." he let out a groan. "I don't know what I mean... I'm just confused..."

"Whatever." Casey said as she began to walk away.

"Casey, wait!" Derek grabbed her by the arm to stop her from leaving.

Casey yanked her arm from his grasp and turned to glare at him, "What?"

"I just... I need your... help..." Derek struggled to say as he stared at the ground.

"Since when do you need my help?"

"Look, I know you don't understand anything I am saying... but just hear me out..." He pleaded with desperate eyes.

Casey sighed, "Derek, this is crazy... you and I never talk like this..."

"Sure we do... We've had our moments over the years..."

"Um, no we haven't. I prank you, you get mad, we fight, and then we avoid each other. That's how it's always been."

"Well not where I come from." Derek mumbled.

Casey raised her brow, "And where exactly do you come from?"

"You already think I'm crazy so I might as well just tell you..." Derek said as he grabbed her by the shoulder and ushered her to a more secluded part of the hall.

"Would you quit touching me?" Casey snapped as she once again pulled away from him.

"Sorry..."

Man, she's worse than I have ever been...

"Just get on with your story because I have somewhere I need to be." She said as she folded her arms across her chest and leaned against the wall.

"Ok... but please don't say anything until I am done telling you... because I have a feeling you might not like what I am about to say..."

"Fine, just hurry up..." She said impatiently.

Derek let out a breath as he looked into her eyes and started talking, "Ok... where I come from... I am the one that pranks you all the time..."

Casey went to open her mouth to object but Derek cut her off.

"I'm not finished..."

Casey frowned but motioned for him to continue.

"As I was saying... You and your mom and Lizzie moved in with me, my dad and siblings three years ago... You are the one that loves school and reading books; you're not very popular, and you would never dress like this; while I am the complete opposite. I hate school, I play hockey, I am popular, and I most certainly never wear sweater vests.

"My best friends are Sam and Ralph while you are the one that is friends with Noel and Emily. You and I fight a lot but sometimes we actually get along and are civil with one another... Are you understanding any of this?"

Casey stared at him for a moment and then burst out laughing, "Are you serious? You popular? Me loving school? In your dreams, loser!"

Derek was flabbergasted, "But... but its true..." His eyes widened when he realized something. "Your hair!" He exclaimed.

"What's wrong with my hair?"

"It's got purple in it!"

"Yeah, so what?"

"So I did that to you!"

"Excuse me?"

"Last night, I put purple dye in your shampoo bottle and it didn't fully wash out!"

"Actually I just dyed it myself. I like purple."

"No, I did that to you and then my dad grounded me."

Casey laughed again, "As if your dad would ever ground his precious son!"

"He always grounds me... mainly because of the pranks I pull on you..."

"Ok... seriously... this is just getting annoying now. You need help, Venturi."

"Case, I know this sounds insane..."

"Don't call me Case!" Casey snapped as she scowled at him. "It is insane. You're insane. Now leave me alone!"

Derek watched his stepsister walk away flashing him the loser sign with her forefinger and thumb. I can't believe I'm about to say this... but I miss the old Casey. He admitted to himself.

Ok... So there is the first part. I'd love to read your thoughts on it and if you have any suggestions or ideas let me know.