The mother's younger sister, Azusa, started living alone after her divorce. Her nephew, Ryota, went to help her clean up her room... The house she bought with the divorce settlement was a mansion, and even cleaning it was a struggle. Although he was exhausted every day, Ryota was enthusiastic because he wanted to see beautiful Azusa's smiling face. When he tried to go to bed early for the next day, he heard Azusa's sultry voice that he had never heard before. Suspicious, Ryota peeked into the next room...
