[GNAB-024] We Found Her While Conducting An Amateur Boys And Girls Focus Group Experiment!! This Prim And Proper Little Stepsister JK And Her Big Dick Big Stepbrother Attend The Same School And They Were Using A Face-Swapping App To See If They Could Grow Closer Together, But Instead, They Ended Up Swapping Bodies Instead... And Then, The Only Way To Switch Back Their Bodies Was To Raise Their Bodies' Synchronicity Levels, And What If The Only Way To Accomplish That Had Some Certain Requirements?

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？

[GNAB-024] We Found Her While Conducting An Amateur Boys And Girls Focus Group Experiment!! This Prim And Proper Little Stepsister JK And Her Big Dick Big Stepbrother Attend The Same School And They Were Using A Face-Swapping App To See If They Could Grow Closer Together, But Instead, They Ended Up Swapping Bodies Instead... And Then, The Only Way To Switch Back Their Bodies Was To Raise Their Bodies' Synchronicity Levels, And What If The Only Way To Accomplish That Had Some Certain Requirements?

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？