GS-392 - 親の目を盗んで家庭教師を誘惑するエロビッチ女学生！！ 真面目な俺にエロい質問ばかりでエロに目覚めた女子学生の好奇心は止まらない！ワザと着替え始めたり、パンツを見せてきたり誘惑されまくりでソソられまくりビンビン勃起！でも、さすがに親がいるので我慢していたら…

To begin with, the male actor explains to the actress that he gets bigger when he's excited—that's called an erection. It's shocking that neither the director nor the actor seems to understand basic sex education or even the term 'erection' in an AV production. Moe Hoshizora knew how to handle it, so this is disappointing. It makes no sense to have this setup if they can't even explain it properly.