Akane is the attractive sister of Tatematsu Minoru, a yakuza from the Ishikawa organization who controls Shinjuku. He desires to send her to college and mold her into the ideal young woman. He has a deep affection for Akane. His affection for her exceeds what he feels for his mistress, Kanae. And still, Akane feels alone. Now, a new tutor enters her life and appears to take a fancy to her...