Mizuho had been living with her father, who ran a construction company, ever since her mother passed away. On the verge of graduating from college and preparing to marry her fiancé, her life took a drastic turn when her father decided to cut ties with the Saoshima crime syndicate, a group he had business dealings with. This decision brought about far more tragic consequences than anyone could have imagined. The shocking events that followed would irrevocably alter Mizuho's life, deepening the story with intense and harrowing developments.