Since childhood, Yuuta has harbored special feelings for his aunt, Kaori. However, to Kaori, Yuuta has always remained her beloved nephew. She doesn't even notice when he peeks at her while she's bathing. After getting out, she nonchalantly wanders around wrapped only in a bath towel. Her utterly unguarded appearance shakes Yuuta's composure, leading him to impulsively pull Kaori close and embrace her. Through passionate kisses and caresses, Kaori realizes what she desires as a woman...