"Tonight there's an interesting woman here... Look, that woman in black, don't you recognize her?" "I think..." "Husband, wasn't he killed?" "Even through a mask, you can tell with that face." Former model Hikawa Ikka. Trophy wife of nouveau riche Yoi Mashima. I used to show off when I was alive (laughs). This is the dark zone near Minato Ward, an underground casino. After her husband, an IT tycoon, was killed and she became a widow, Ikka had been addicted to the thrill of gambling while he was alive. But after meeting the up-and-coming female writer Azae Yoko, she begins to explore the world of sadomasochism…
