[GNAB-024]

素人男女モニタリング実験でゲッツ！！ 同じ学校に通う♀マジメ妹J◎×巨根兄♂がスマホの顔交換アプリで距離を縮めるつもりがカラダが入れ替わってしまった…。しかも、元に戻る方法がお互いのカラダのシンクロ率を上げるという条件になってしまったらどうなる？ Who's the JAV actress in this video? Amateur? Name revealed!

Curious siblings always chasing the latest trends were approached on the street with an offer to test a new smartphone feature. The phone came equipped with a mysterious function that allowed them to swap bodies. Unaware of its true power, the excited pair began playing with the device. Once their bodies were exchanged, their minds struggled to catch up, triggering an instinctive urge to explore their new forms. Especially the sister, experiencing a male genital for the first time, became completely fascinated—so much so that she aggressively shoved her brother like an excited animal. Amid this bizarre body-swap situation, their relationship begins to shift in unexpected ways, paving the path toward a new kind of romance.