I went on a family trip to a hot spring hotel in a mixed open-air bath, and before I knew it, I couldn't help but get aroused by the sight of my girls' growing bodies. She can't hold back anymore, so when she pretends to wash her back and gently touches her daughters' bodies, her naive body, which doesn't know men, reacts violently! She had sex in the bathtub, forgetting that she was her daughter and her father.