I

My heart was pounding in my chest as I picked up the helmet from my sister’s room. I was confused at first when I came in yesterday to see her fondling herself like that, but then I saw Sarah on the bed with this helmet on. I’ve heard of these before but never have I thought that Elle would be interested in this kind of thing.

I looked at my sister’s sleeping form as I held the helmet in my hands. It was almost 10:00am and yet Elle was still asleep while mom and Stacy were out running errands and wouldn’t be back until dinner. Elle may have been my older sister, but I’d be lying if I said I didn’t have thoughts about her before, I would also be lying if I said I wasn’t curious what it would be to be a girl even if it wasn’t Sarah.

Elle stirred and I quickly left her room to the privacy of my own. I sat down on my bed, the helmet clutched in my hands. I was breathing heavily as I considered what I was about to do. Yes, she was my sister, but at the same time I was really curious as to how this would work out. My clock on the side of my bed beeped, it was 10:00am and I could hear movement from Elle’s bedroom as she woke up.

I took a breath when I placed the helmet on my head. There was tingling sensation, followed by my body going numb. Briefly, darkness filled my vision.

I gasped as Elle’s room came around me. I glanced around, not able to believe what was happening. Elle’s boobs dominated my sight when I looked down and I couldn’t help but poke at them through her shirt and bra. They were less soft than I would thought they would be.

I giggled, bouncing on Elle’s toes before groaning when I felt a soreness in her back. “Forgot to turn off the pain.” I muttered, feeling some slight disconnect at hearing Elle’s voice instead of my own. Still, it was interesting to know that women with big boobs did experience back pain. I felt little bad for some anime women when I realized that.

I looked up from Elle’s breasts and noticed the mirror standing against her wall. I smiled as I walked closer to it. I stopped …