Summary: My mother and father decided to adopt a little girl and that's when they had helped me to my sentence to hell. I gave her her first hickey and now I'm after all of her. Maybe God was throwing an optical my way to see if I could handle a little influence, well if that's the case, I failed the test miserably.

"My step-Sisters' a walking sin"

Chapter One

"Annoying as Hell"

By: Regina Guthrie

"Get out of my room, twerp!" I yelled at the annoying little brunette who was bouncing at the end of my bed. As her knees hit the mattress her body was sprung up and she'd giggle as her hair swirled around her face. If she wasn't my annoying little step-sister I might have thought of her as... cute. But nothing more then that, I was three years her senor. She was just a small, scrawny fifteen year old while I was a mature seventeen year old.

"I can't sleep in my room, Shiro-chan!" Momo protested with a small pout. I growled at her. She always insisted on calling me that stupid kiddie name. When she arrived to our house after her father died it was winter and I was only ten at the time, outside playing in the snow when my parents came home with this adopted little devil. Her seven year old ass thought my hair matched the winter wonderland. I was told Shiro was her name for the snow, her parents never corrected her and now I was also sharing the snows name.

"Don't call me that! I'm seventeen you brat, and it's fucking embarrassing when you call me that shit! And you can too sleep in your own room!" I bellowed at her. She flinched inwardly and a small blush over took her cheeks as her plump bottom lip began to stick out further then her top. I smirked.

"Why!? I want to sleep in here!" She whined. I sighed and glared at her petite form. We went through this every damn night and her little ass always got her way. I would probably, once again, have to share my queen bed with her. Mom and dad would hear us fighting, come in, ask whats going on and then she'd cry and tell how I'm being mean to her and they'd make me let her stay with me. I know, pretty pathetic for a fifteen year old girl but she knew how to work my parents.

"Why can't you sleep in your own room?! Afraid the big bad boogy man is gonna eat you when you turn the lights on? Well news flash little girl! No one would want to eat you! Not even the boggy man! You scare him away with those overly huge crack eyes!" I insulted as best I could. She was very sensitive about her eyes and body, she thought everything was out of check and her eyes were just so huge, people poked fun of her all the time because of it. I watched as she frowned and shook her head at me.

"Well the only reason you don't want me to stay with you is because you have another slut that's gonna sneak through your window tonight and you don't want me telling mom and dad on you!" She accused but I could see in her eyes I already hurt her with my last comment, I was winning. I smirked.

"I'd rather have her curled up against me with her normal body then you with your flat chest and no curves! Shave your head and everyone would think you were a skinny little boy. Besides, your just jealous that I can get the opposite sex into my bed." I watched as she gaped at me and then shook her head again.

"I can too!"

"can not." I smirked at her as her face turned red.

"Yea huh! For your information, I'm-I'm not a virgin anymore!" She lied through her teeth. I chuckled at her and now shook my head at her. She was so pathetic.

"Your the worst lier, little girl. There's no one who would want to touch that thing of a body you call your own." I informed her. Although, I was also lieing. She was pretty well shaped for a fifteen year old. Not that I would admit that to her. I had way to much fun just picking on her that that would be just silly of me.

"Izuru would!" I stiffened as she crossed her arms over her chest with a victorious smirk on her face. Momo knew how to push my buttons and she was doing a good job at this point. Izuru was one of my best friends from the first few years Momo had joined our family. He was way more advanced then me in the perverted mind and he had mentioned a few things to me that he would like to do to my little step-sister. My father had over heard him once and banished him from ever coming back. He told me that it wasn't normal for little boys to say and think such things about even littler girls. I didn't understand but now, in this time in age, I do and he disgusts me.

"Don't you fucking say such crap. We both know nothing has gone on between the two of you." I hissed as I glared at her. She only giggled and nodded her head.

"Oh but there has! I can prove it!" She said with a goofy smirk on her face. She began to move her long hair away from her neck where it was wrapped around to reveal a pretty big red mark. It looked like a hickey... and that's where I lost my mind. I didn't know what got into me but I jumped off of my bed and started to get dressed as I cursed under my breath. How dare he touch her! Momo was looking at me in confusion but I didn't fucking care. "Shiro, what are you doing?" She asked as she climbed into my bed and got under the covers. Any other time I would have pushed her out and onto the floor but I had bigger things to worry about.

"I'm going to make sure that ass hole never touches you again." I muttered out angrily and I stormed out of the room. I heard her gasp and call my name out but I continued walking. Her small footsteps were behind me and I could tell she was running. I no time flat her small little arms were wrapped around me and she was pulling me back. "Let go!" I yelled at her.

"No! I was lying Toshiro! Please don't hurt anyone!" She confessed, but that only made me angrier. I swung around and pinned her to the wall with her hands above her head, her eyes widened in horror. I yanked her hair away from her neck and she hissed lowly. I ran my fingers over the red mark with my free hand and frowned when I felt a small bump in the middle.

"It's a bug bite you were scratching on." I whispered. Even though it wasn't a question she nodded and looked down at the ground, her cheeks tainted pink again. I sighed and let go of her as I turned around and started to walk back to my room. I didn't hear her fallowing me and I thought that maybe she was at least smart enough to not mess with me for a while, but instead a bit after she ran past me and just as i guessed, turned into my room. I sighed angrily as I entered to find her nestled under the covers on my side of the bed, with her eyes closed. I couldn't help but smirk as I ran and jumped onto the bed, making her form raise into the air as she yelped. I laughed at her.

"That wasn't funny!" She screamed at me with a huff.

"Neither was telling me that perv. gave you a hickey!" I countered. She just blushed and stuck her tongue out.

"Well at least he probably knows how to give a girl one!" She screamed back at me. I laughed and shook my head.

"Well then, let me show you what a real hickey feels like." I don't know what came over me but before she could protest I dropped my head down to the other side of her neck and sunk my teeth into the smooth flesh and began to suck on it roughly. She gasped and yelped as I pressed my teeth further into her soft skin and swirled my tongue around the heated tissue. I quickly pulled away afterwards. When I looked at her face I began to laugh. She was as red as red could be and her lower lip was trembling slightly.

"You bit me!" She whinned and I just shook my head.

"Well that's how you get a hickey, dumb ass!" She stuck her tongue out at me and turned to her side while curling back up into the blankets.

"Next time a stupid boy bites me I'm going to kick him in the balls." She muttered angrily. I laughed at her and sighed. I didn't respond to her and just watched her with her eyes closed and her scrunched up face as it began to form back to normal little by little. That was the day that my whole life turned upside down and I knew the devil had a special seat in hell waiting just for me because the second I had tasted my step sisters sweet skin, was the day I decided I wanted as much as I could possibly get. And that night wasn't even the worst of them all...

This is the beginning of a story I've wanted to write for a long time now, but never really put enough thought into writing it. My sequel to "what money can't buy" will be over soon and then I can focus on this, but for now I will update both of them as much as possible. This story accrued to me when me and my cousin were fighting over if it was okay to love your step sibling more then you should love them. I personally used to think it was wrong but then I thought about it and put myself into the shoes of people like this and thought, well, if my dad or mom were to get divorced and marry one of Todd's parents we would be step-siblings. Would that stop me from liking him and wanting him? and my answer was "Hell no!" So now I don't see nothing wrong with step siblings liking one another or marrying each other. But I love the idea of a forbidden love story with the plot! So I'm going to write it! I am rating some chapters 'M' because of future happenings. Please review! I am about to write the second chapter right now so I can post it when I have ten to fifteen reviews or more! Thank you! :D