My sister-in-law told me, ``I'm too embarrassed to have sex because I'm about to cum right away.'' Apparently, my sister-in-law has a super sensitive whole-body erogenous zone complex that she can feel with just the slightest touch. Furthermore, she is asked to help improve her constitution, and ends up touching her sister-in-law's body... Then, when I actually touched it, I cum more than I imagined! Instead of improving my condition, I started to feel uneasy right in front of my eyes, and it became a place where I couldn't even practice! As a result, you can not only touch it, but also insert it, resulting in a full-fledged physical improvement!