MIDA609 — Getting Pounded Apart by a Perfectly Steady Machine Piston...
A handjob isn't good just because it's fast! A piston doesn't make you cum just because it's fast! What feels best is a piston at a [constant rhythm]! Not fast... but never slow either... every second bringing you closer to the climax waiting ahead! Nao Jinguji, who boldly claims ‘sex without tempo changes sounds boring,’ gradually gets broken down by that steady, unchanging piston...! She wants it faster since she's so close to cumming — but it stays constant.
