Here is a bit of background for you, before I get into the story.
My father had passed away when I was only 3, and my mom had remained single until I was 16, when she started dating a man who had lost his own wife 10 years earlier. I was in high school at the time, and was more focused on my own life to really spend that much time with them; but I did know that he had a daughter that was two years older than me and in her first year of college. She lived on campus, so we never met. That is, until my mom told me that they were getting married that summer.
The first time I ever met Claudia, his daughter, was at the wedding rehearsal; and I thought I was in love. She was short, around 5' 4", had long brown hair, blue eyes, and a rack that made you want to drop down and thank whatever deity you believe in. I had to force myself not to stare at her all night. It was at that point that I started to resent the upcoming marriage; since it meant that this gorgeous girl was going to become my sister.
Later that night, after everyone had eaten dinner, and the alcohol had started to flow, I found myself following her outside the restaurant. She looked over her shoulder, and smiled at me, before turning the corner, and heading into the alley. I, of course, followed her.
She walked past the restaurant, and into a small park behind it. I watched as she walked over to the bleachers, and sat down. She turned to look at me, and waved me over. I joined her in the bleachers, and we talked for the first time. That's when she asked me if I would like to kiss her.
Without hesitation, I leaned in and started kissing her, wrapping my hands around her back, to hold her close to me.
We kissed for a while, and then stood up and adjusted her dress. I was confused, and wondered what was happening. That's when she told me that we couldn't do this anymore since we were about to become brother and sister, and it would be wrong. That was the first night of two years of teasing.
Finally, two years later, I was heading to college, and was going to be staying on campus; so I wouldn't have to see her as often. I chose to go to a college just outside of town, limiting myself to only a couple of visits a year, as well as Christmas and summer breaks.
But the teasing just got more and more intense. That Christmas, she only wore a tee shirt while we were unwrapping presents, and made sure that I got a glimpse of the fact that she wasn't wearing panties. And when she gave me a present to unwrap, it turned out to be some lingerie that she had bought for herself as a present. She pretended it had been an accident, and everyone laughed, but I saw her wink at me; so I knew she had done it on purpose.
I stayed at school for Easter, and didn't see her again until summer break. But I knew it would be hard, being in the same house as her for 3 months.
This story takes place over that 3 month period.
*****
I arrived home from college a day later than expected, and was greeted to an empty house. I headed to my room to put my stuff away, and noticed that Claudia had already returned home from school; I saw her stuff in her room.
I went downstairs and grabbed a bite to eat.
Shortly after eating lunch, the door opened, and everyone came in. I hugged my mom, and shook Terry's hand. We walked into the living room, and I talked to them about the last semester, but I could tell that they were only partially listening, and I noticed my mom was fidgeting; something she only does when she's excited about something.
I stopped talking and asked them what was up; I was actually afraid that they would tell me that my mom was pregnant. Instead, Terry said, "Well, since you are, both, no longer kids, your mother and I have decided to go away on vacation this summer; kind of like the honeymoon we never had."
"We're going on a world tour." My mother blurted out, practically hopping in her seat.
"Really? When?" I asked. I also noticed that Claudia didn't seem shocked, so I assumed that they had already told her.
"We're leaving this Friday, and are going to be gone for most of the summer. We'll be back just before you guys head back to school." Terry said. "I've banked enough time off during the last 3 years, and your mother will be taking a leave of absence from work."
"Why didn't you tell me sooner?" I asked. "I would have registered for summer courses, and stayed at school."
"Nerd." Claudia mumbled.
"It was almost a last second thing, Honey." My mother said to me. "Terry and I have talked about it for a while, but we only decided to go ahead with it about a month ago; only after we both found out that we could have the time off."
"So I'm barely going to see you guys this year?"
"I'm sorry, Honey; we just thought it would be nice." My mom said.
"Look, don't get me wrong; you guys deserve this. I want you both to be happy, and enjoy yourselves; I just wish you had planned this for a different time, or let me know sooner, so I could have made plans of my own." I said. "Now I'm stuck here alone all summer."
"You won't be alone." Claudia said. "I'll be with you all summer...alone. It'll give us a chance to bond; brother to sister."
"There, you see, it won't be so bad." My mom said, oblivious to Claudia's tone, and the implied teasing behind it.
Terry went on to tell us about their trip, explaining all the stops they would be making along the way, and the exotic destinations they would be visiting; I only half listened, as I was thinking of ways to keep myself busy this summer, and away from Claudia.
That night, as I was sitting on my bed, chatting with a friend from school on my laptop, Claudia was taking a shower. When she was finished, and in her room, she made sure to leave the door open again. Then she made a big show of turning her back to me, and letting the towel drop, exposing her ass to me, before picking up her robe, and putting it on. She then turned around, and exited her room, saying "I think I'll go down in the basement, and lie down on the couch to watch TV."
I got up to close my door, and then sat back down on the bed. "She's doing it already." I typed to my friend Jimmy.
"Why don't you just nail her, already? She obviously wants to." He typed back.
"Because, she's my sister."
"Step-sister. Not your sister by blood, dude, and only since you were 16; that's totally bangable territory."
"Whatever. Besides, she doesn't want to; she's just teasing me because she knows I want to."
"So you do want to?"
"Of course I want to, dude; you've seen pictures of her, she's totally hot."
"Yeah, I'd do her."
"Dude, she's so hot, I'd do her with you, and not even care."
"I'm coming over, then, and we'll tag team her."
"Be serious, dude. I don't know what I'm going to do. She knows I want her, and she's using that to make me uncomfortable. She has total power over me."
Jimmy was silent for a few minutes, and I thought he might have been disconnected. "Dude?"
Finally I saw that he was typing, and waited for him to finish.
"If you really think that she has total power over you, then maybe, once your parents are gone on their trip, you should show her who really has the power; and take what you want. Make her understand that you won't be teased anymore."
I reread what he wrote and thought about it for a while. "What are you trying to say, dude?" I asked.
"TAKE WHAT YOU WANT." He typed back.
"Are you suggesting that I rape my sister?"
"No way; not rape. I'm just saying that you should make her understand that the teasing in unacceptable and that it has consequences."
I thought about it a little bit more, and asked, "How exactly am I supposed to do that?"
