もしも…終電逃した男女の友達が混浴温泉で○いっこたいけんしたらどうなるの…!?裸で触れ合う男女友達、今まで異性としては意識していなかった二人の性欲は高まるのか…りかさん大学4年生こうじさん大学4年生しずくさん大学3年生けんいちさん大学3年生
What if... a male and female friend who missed the last train went on a sex adventure in a mixed-gender hot spring...?! When the male and female friends touch each other naked, will their sexual desires increase even though they had never thought of each other as the opposite sex before? Rika, a fourth-year university student Kouji, a fourth-year university student Shizuku, a third-year university student Kenichi, a third-year university student