Yoshihara Akihito had no particular goal and just managed to manage his daily life. One day, he happened to meet Ishikawa Eriko, who had a secret feeling in high school. Akihito decides to make a plan when he sees Eriko, who rejects all the past, "memories that he wants to change" and "memories that he wants to erase" that are revived by the reunion. To settle the abominable past for the two in high school. A straight and slightly bitter youth group story that depicts characters with a dark past facing each other desperately while being clumsy in order to repaint the memories of memories that turned away from their eyes as adults.
The yakuza have their best days behind them and are only a shadow of themselves. The old rituals seem out of date and their tattoos make them outcasts of society. The inexperienced student Ryō stumbles into their ranks by chance, and before he knows it, he becomes entangled in dark machinations. He quickly succumbs to the fascination of omnipotence fantasies and hedonistic decadence and sinks deeper and deeper into a parallel world of prostitution, blackmail and violence. However, there is one thing that Ryō has not considered in his naivety: once yakuza, always yakuza!