Keiki's husband, Haruki, is diagnosed with a kidney abnormality, leaving the couple anxious about the possibility of future dialysis. At that moment, Haruki's cousin, Masahiro, suddenly proposes, "Just use my kidney for a transplant." His words deeply stir Moe, tempting her into his embrace. Though further tests later reveal that neither dialysis nor transplantation is necessary, Moe's heart can no longer return to her husband. The passionate, lust-driven affair between the two continues to spiral out of control.