[OFSD-052] Super slow piston × voice suppression explosive orgasm! A library of silence where you can have sex with anyone as long as you keep it quiet

"Please do not make any noise about lewd behavior in the library." A library with such a strange poster. If you make noise in the hall, the librarian's sister and the surrounding customers will warn you to be quiet, saying, "!! shih." When we two virgins came to this library for the first time, we looked around the library and saw a beautiful woman with big breasts being rubbed by a man! ? If you sneak a peek... Gingin's erect is packed! ? It's in the library, right? ? Insert it as it is! ? A very rich adult sex has begun! But... Never make a sound! Silent & slow piston sex that doesn't make a sound! ! When we finally understood the rules of this library, we took the plunge and approached the girl next to us and asked for it. Unexpected loss of virginity in an unexpected place! After that, a big 9P with men and women mixed! Don't make a sound even if it feels good! Girls can't even moan! No violent piston sounds! A slow slow piston with maximum excitement in a mysterious space! Suppress your voice and secretly explode! ! What can be heard in the hall is a faint sigh and a nasty sound. I can never make a voice, but... I put a lot of it inside over and over again! I'm sure we'll be going to this library many times in the future...