SDJS-021: 「女性はカラダのどの部位を舐められると最も感じるのか？」をSOD女子社員同士が真面目に検証した結果 柔らかな舌先で性感を高めあい快感が倍増、2分間で平均10回以上持続的オーガズム！ SOD性科学ラボ レポート10

As a result of serious verification by SOD female employees of "Which part of the body do women feel the most when they are licked?", The soft tip of the tongue enhances the sexual sensation and doubles the pleasure, and lasts more than 10 orgasms on average in 2 minutes! SOD Sexology Lab Report 10