My sister Joni is five years older than I am and we had a special bond from the beginning. Our mother was a drunk and left when I was seven. Dad wasn't a drunk, he was just mean and had a bad temper.
When mom left Joni took over being the "woman" of the house, she cooked and cleaned. Sometimes dad would come home in a bad mood and start yelling, if one of us was near, start hitting. Joni protected me from that for the most part.
I started taking martial arts and weight lifting when I was ten, by the time I was sixteen I was buff and a good fighter. One day when I was seventeen I was doing my homework in my room. Dad came home in a very bad mood, he had a hard day and started taking it out on Joni. I heard the yelling and came out of my room just in time to see him hit her. People say they "see red" when they get mad and loose control, I never knew what they were talking about till that moment. I started beating my dad. When he came home from the emergency room he never touched either of us again.
When I turned eighteen he kicked both of us out. We rented a studio apartment. I had been working off the books for a construction company so when I turned eighteen I was hired full time. I started making good money, so I put Joni through accounting school. She wanted to be a CPA. She became the youngest accounting manager her company ever had. I worked my way up to job supervisor at my company.
All the while we still lived in our studio, it was small but we could afford it. Being small there were times I would see Joni naked, and she would see me naked, not on purpose just by accident. As time passed I started feeling like Joni was more my girlfriend rather than sister. We fought and made up, she kept the place nice and I cooked.
When she got promoted we decided to move to a larger place, but we were still not making big bucks, so we got a one bedroom apartment. I took the living room and she took the bedroom, we set a schedule for the bathroom. More than once she would come in when I was taking a shower and pee. Sometimes she would wait for me to get done and make me come out to grab the towel, then laugh mischievously. I got back by walking around in my underwear, more than once I would be hard and it showed.
We weren't sleeping together, but we were acting like boyfriend and girlfriend. We went out to dinner, to movies and the like.
I started noticing Joni would "accidentally" bump her breasts against my arm, or want a hug and hold it tightly for a long time. There were other things like when we would watch TV, she would get very close and sometimes lean up against me. Well, being a guy my mind went to how soft and feminine she was, her curves, and how sexy I found her. I had to stop walking around in my shorts because every time I thought about her I would get hard, and I couldn't let her see me walking around with an almost constant hard on.
Then things changed, I was having a bad work week. Friday I came home and I was dirty, tired and worn out. When I got into the house Joni told me to get undressed and into the tub. She had made a nice soothing bath for me, I was so grateful.