SDJS-121 SOD female employees cum with a 150,000 rpm super high-speed electric vibrator (30 times faster than before)! In their quest for the electric vibrator that will stimulate them the most, the girls themselves become human guinea pigs. Trying the newly developed electromagnetic vibrator, these 4 girls cum a total of 78 times, becoming so moist that their office suits become wet all the way down to the hem!