[MIAA-185] The virgin brother who really received the provocation of the elder sister does not notice that it is hit, and the explosion piston is sounding.

The first challenge of the sound Kanon to the popular series! I wonder if I made fun of my little virgin's brother as a joke. The younger brother who mistakened me as really inviting me immediately inserted a into my sister immediately immediately after his parents left. The younger brother who is not accustomed to the woman does not notice, and continues to swing the waist to Gamshara though it has been cumped by too much power. It is chased after pleasure by the piston which continues even if it cums, and it repeats the climax, and resistance continues to be squid many times until parents come home empty.