出張先の温泉旅館でまさかの相部屋！まさかの混浴！！そして、まさかの発情！！！出張で訪れた温泉旅館の手違いで女性社員とまさかの相部屋！！しかも温泉は混浴のみ！！予期せぬハプニングの連続で不意に目撃した女性社員のカラダが思わぬ巨乳で堪らずフル勃起！
On a business trip, he ends up sharing a room with a female co-worker at a hot spring inn! He ends up in a mixed bath! And he gets turned on! Due to a mistake at the hot spring inn he visited on a business trip, he ends up sharing a room with a female co-worker! And the hot spring only has mixed baths! A series of unexpected happenings lead to him suddenly seeing the body of a female co-worker with unexpectedly large breasts, which makes him get a full erection!
