A two-night, three-day hot spring trip planned by Rie's husband, Kengo, and his younger brother, Yuji. Surrounded by abundant nature, this inn is a place of fond memories for Kengo and Yuji, who were often brought here by their deceased parents when they were young. The worst happening that has happened in such a memorable place. Rie ran into Yuji without realizing that she was in the men's bath due to the gender change system. Yuji could not suppress her desire to see Rie's body for the first time, and he attacked him.
