Set in a quiet residential area of Tokyo, this work unfolds a forbidden love story. It begins with a masturbation scene reflected in a mirror, leading to unexpected developments with the appearance of a stepsister. Overall, it flows softly, and for fans of backside fetishes, the T-back姿姿 of the lesbian scenes is particularly enticing. However, the screenplay lacks creativity and can sometimes feel dull. There are voices wishing for more excitement and variations in acting. Even though there is a sense of something missing, there are certainly enjoyment points to be found. It may take a bit more ingenuity to fully open the door to this forbidden realm.