The Kawana siblings lost their parents when they were young. Airi, the older sister, graduated from a junior college and became an office lady. In contrast, her younger brother Tatsuo had a habit of playing around and didn't study well, but Airi loved Tatsuo, her only family member, very much. One day, Airi's cell phone receives a call from a yakuza named Kawagoe, who says, "Your brother has ruined our boss's woman." Soon, in order to make amends, Airi is pinned down by Kawagoe and the others. Furthermore, due to her younger brother's betrayal, even in front of her fiancé...
Auroa Project
