Super slow piston motion x suppressed sound burst! The silent library where you can have sex with anyone as long as you stay quiet OFSD-052

A library with a strange poster read, "Please absolutely do not make any noise or engage in obscene behavior inside the library." Making any noise inside would result in the librarian and other users saying "Shh!!!" and demanding silence. We, two virgins visiting this library for the first time, looked around and saw a large-breasted woman having her breasts fondled by a man! Peeking secretly… and there it was… a rock-hard, erect penis spread open! This was in a library?! And then… a very intense adult sex session began! But… absolutely no sound! Not even a sound! It was silent and slow-motion sex!! Finally understanding the library's rules, we mustered our courage and approached the girl next to us, asking her out. She surprisingly agreed! In an unexpected place, unexpectedly, we lost our virginity! From then on, a mixed-gender 9P orgy! Even if it felt good, no sound! The girl couldn't even breathe! Not even the sound of vigorous thrusting! The slow, deliberate piston-like movements in that wondrous space reached maximum excitement! Suppressed sounds, yet sudden, explosive bursts! All that could be heard inside were faint breaths and lewd smacking noises. Absolutely no sound... but... I still ejaculated repeatedly inside! I think we'll definitely come back to this library many times from now on...