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.

SOD女子社員 150，000回転（従来比30倍）超高速電マでイクッ！最高に気持ち良い電マを求めて自ら実験台となり絶頂しながらも新型電マ開発に挑んだ結果、パンツスーツの裾まで濡れるほど漏らして漏らして4人合計78イキ！