SGSR-169 - ナンパされたエッチな素人女性たち 2人組を狙え！ 戸惑いながらも親友や姉妹の目の前でマ○コを濡らしちゃう女の子4時間

It's great seeing her feel bashful or flustered in front of friends and sisters. With female staff members even crashing the scene, you get to enjoy a variety of reactions in truly embarrassing situations.

The plot involves targeting a pair, taking one down first, and then going for the other. The shame and confusion shown when the second person is forced to watch the first one being taken down is really good.