Hana-chan is a well-behaved girl who always gets good grades. However, she secretly has a strong interest in sexual things... One day, her older brother suddenly shows up at her room and shows her an erotic video, making her feel aroused. Realizing that his sister is curious about such things, he decides to take advantage of her by pushing his advances! As Hana-chan gives in to her curiosity, she tries her best to satisfy the desires of these young men around her.
