Shota's father runs a talent production company and decides to let "Ruka," a gravure idol who has come to Tokyo to pursue her dreams, stay at their home for a while. This makes Shota's heart race with excitement and anticipation as he looks forward to living with the cute, well-endowed older girl. One day, Ruka asks Shota to help her with her body hair removal, and this small request leads to unexpected developments. The story unfolds through surprising relationships formed in everyday life, intertwining with pure, heartfelt emotions.