This is the first lesbian work by the cute, lolita-like beauty , Ichika Matsumoto ! When their parents remarried, their daughters became sisters close in age. The older sister, Ichika, is free-spirited and active, while the younger sister, Aoi , is quiet but curious about sex. Aoi can't help but find Ichika adorable. She reacts sensitively to her naughty pranks, so things gradually escalate. Eventually, Ichika also awakens to pleasure...!!