Full of energy! Shinako, the little sister who tempts with her bouncy butt, makes her appearance. Little Shinako loves playing with her beloved big brother every day. No matter what happens, if it's what her big brother wants, she'll agree with a smile! One day, overcome by desire for his adorable little sister, the big brother lays his hands on her. He brings out a vibrator and assaults Shinako's sensitive spots! Hearing his little sister's moans, the big brother gets even more excited, and the act escalates... What will happen to Shinako?
