Note: Inspired by a true story.
I spent my first two college years living at home, attending a community school. My sister Mira was a high school senior at that time and had just turned 18. She was about 5'2", 105 lbs with long dark hair. And oh yeah she had some nice assets. I wouldn't refer to my own sister in a sexual way but the way the circumstances turned out, I don't feel like holding any detail back. She had some nice protruding tits, which were definitely B cup, and could have qualified as Cs. She didn't seem to have a large butt. She mostly wore lose jeans or pajamas at home so it wasn't that noticeable.
Mira had just graduated high school and was awaiting admission to the same community college I had attended. She mostly stayed home with our mother while I hung out and came back late evenings. We were, and still are pretty cool with each other. Nothing special - just a normal brother and sister relationship. I had always respected her privacy and was never concerned about mine. I was barely ever home and only showed up at the door to sleep.
This was my last summer living at home. I was transferring to a university in the mid-west. I was fed up with living at home; and the school out west was much better than the Boston-area community college I was attending.
Now on to the real story.
The way Mira's bedroom was constructed, it was located "inside" my bedroom. So if you wanted to enter hers, you had to go through my bedroom first. This wasn't exactly a ranch house we are talking about... ours was an old cramped Victorian. My parents bought the only house they could have afforded at the time and we sacrificed some architectural conveniences to get a better price. The adjacent placement of our bedrooms never gave rise to any issues of privacy though. Mira had a bathroom which was attached to her bedroom, and I simply used the larger bathroom out near the kitchen which the rest of the family used. So Mira had it good. She had her own room with a personal bathroom.
Like I said, I had always respected her privacy growing up. Even though I was a horny teenager, whenever I masturbated in my room I made sure she was never home. Otherwise I did it in the shower. Now that I was always out with friends, she practically had the whole house to herself. We had both grown up living in this house since we were about 8, so we had adjusted to it well over time.
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Even though Mira had an attached bathroom, her bedroom was smaller than mine. It was kind of dingy looking and had one little window, though she always kept it sparkling clean. My bedroom was bright and sunny and it had two fairly large windows. One of the windows faced south and was the smaller of the two. I had my bed right under this window and I slept wit my feet towards it. We are going to call this window Window A. Why are we naming windows in this story? You will see. So... the other window, which we are going to refer to as Window B, was situated at a 90 degree angle to Window A, hence it faced East. Window B made the same angle to Mira's bedroom door as it made with Window A - 90 degrees. Window B was also just about 2 feet from her door and was located straight ahead from my bedroom door.
I am kicking myself now for not noticing earlier what I am about to describe here: the 90 degree angle which Window B made to Mira's door meant more than I had ever imagined. The reason why I hadn't noticed this phenomenon earlier is because I was never home and by the time I got home, she had already closed her bedroom door.
Window B being at a right angle from her door meant that IF the following two conditions were met:
1. There was no sunlight – either it was a cloudy day or it was night AND 2. The light was just "right" in my room – not too dark and not too bright.
THEN
...If Mira's bedroom door was just as much as 1/4 open, you could see everything inside her bedroom in a perfect reflection in Window B! (as long as there were no blinds or curtains drawn on the window of course).
The darkness outside turned the window glass into a sort of a mirror. You know how you walk by storefronts sometimes and peek inside, but you can only see your own reflection in the glass- kind of like that. The image was not very clear like a mirror would produce but it was clear enough to show some details. You couldn't really see all colors but you could notice the difference between light and dark.
OK maybe I shouldn't be surprised or angry at myself for not figuring this out earlier. It wasn't easy. As horny a teenager as I was, I hadn't had any fantasies about my sister until then. I also kept my blinds closed over Window B so no image was forming on those blinds even when I was in the room and the above-mentioned conditions were being met. And heck, even if every condition was being perfectly met and I did see something in the window, I simply never paid attention.
But things turned abruptly this summer.
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In mid-June, I broke up with my girlfriend and started to spend more time at home. Mira worked part-time in a local clothing store. By the time she got home, it was almost dark. These days I was always on my bed, either reading a book or surfing the web on my laptop.
One evening when Mira got home, I was reading a book on my bed. She put her handbag on the table in my room like she usually did and went inside her bedroom. I barely noticed. She always went inside her room, took a shower, changed and then came out to say hi to me. Then she would get busy with home chores and whatever else she had to do.
On this particular day while she was inside her room, I had to get up to go to the bathroom. I went outside to the larger bathroom and took care of my business. But when I got back to my bedroom, I saw a vision I had never seen before.
I was staring straight at Window B when I walked into my bedroom, and what I saw in it couldn't have shocked me more. Mira's reflection was clearly visible in Window B. From inside her room! I immediately froze and watched her put on her bra. She was completely oblivious to the fact that her brother was watching her every single move. I was paralyzed. Completely frozen. My brain wasn't entertaining any thoughts of respecting my sister's privacy at this moment. Anyone who appreciates beauty could have derived pleasure out of this vision. I saw her perfectly shaped tits being covered up in a white lacy bra by her delicate fingers, her eyes intently looking down adjusting the placement of the bra.
And then she turned around. I saw her walk to her sock drawer. She pulled out a small clothing article, most likely her panties. She kept facing the sock drawer, unhooked her pants and dropped them. Then she quickly removed the panties she had on, and within the same fleeting motion, changed into the clean ones. It is amazing how quickly girls change panties. Ugh! I wanted to see more. Couldn't it have lasted for another split second?
My cock was rock hard now. I had just witnessed what had been the most beautiful body on a girl that I had ever seen.
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I obviously liked, correction : LOVED - what I saw and I wanted more. That night I masturbated thinking about Mira at least three times in my bed. This was in severe violation of my cardinal rule of not jerking off anywhere else but in the shower. You learn these things when you live in a small house with a scarcity of privacy. But this night I jerked off with reckless abandon. I thought about every single detail. The tits, the nipples, the panties, the ass crack!
Watching her became a routine. I was a Mira junkie now. She could have moved her finger and I would have done anything for her. Every day I watched her change. I took other occasional peeks at Window B to see what she was doing. Mostly I found her doing mundane stuff. Fixing her bed, or arranging her clothes, or just sitting around or sleeping.
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My voyeurism of Mira went on for about two straight weeks. But just as all good things come to an end, this had to come to an end as well.
