[HUNTB-648]

"My big brother, your d***... is this how you do it?" The plain sister practices on my cock!? A shy schoolgirl raised without contact with men outside the family... Who's the JAV actress in this video? Amateur? Name revealed!

Having grown up in an all-girls school with little opportunity to interact with the opposite sex, my shy younger sister was about to enter a co-ed university. Worried about embarrassing herself during her college debut, she asked me, her older brother, to help her practice. At first, we just talked and held hands, but seeing my sister's unintentional panty shots, accidental cleavage, and feeling her breasts brush against me during close contact made me involuntarily erect. Noticing my reaction, my sister suggested using my cock for rehearsal practice. Never expecting to feel such desire for my own sister, I became rock hard instantly.

ちょっと違った。 地味な妹というキャラクターが最初は少し奥手な感じでしたが、徐々に積極的な姿になっていく流れは、全体的に少し不自然に感じました。妹役としてのあり方や、地味な性格を活かしたセクシーな表現が求められる場面でも、どちらかというとキャラクターのバランスが崩れてしまい、ストーリー全体に違和感が出たように思えます。女優さんの演技は、全体的には問題ない範囲で、特に大きな失敗はなかったですが、キャラクターに合わせた演出や表現がもう少し工夫されていれば、より自然な展開になっていただろうなと感じました。