Rei Aoki's character Yukie was raised loved by two men: Keisuke and Choichiro. Choosing friendship over love, Keisuke allowed his best friend Choichiro to marry Yukie, the woman he loved most. After marrying Choichiro, Yukie's body becomes conditioned to only find satisfaction through bondage due to his sexual preferences. Amidst the turbulent Shōwa era, the intertwined regrets and guilt of the three unfold a story of love, betrayal, and the breaking of bonds.