The lead character in this film is Kaori Iiyama! E-Cup's Active Beauty Makes You Feel Intelligent and Depressive! She is a cheerful and beautiful sister who loves to move. She is a casual sports all-you-can-play girl who dances gymnastics and volleyball. Of course, it is an erotic thing that I am good at as part of the exercise, 120 points full of 100 points and self-grading of eroticity. Koori, who loves to sweeten and sweeten, will fascinate you with everything she has cultivated so far. Do you like your sister so much that she's beautiful?