while her son was massaging her shoulders, his hand touched her nipple, and chisato let out a lewd moan. at that moment, the female desire that she had sealed away to support her single-parent household awakened. the backlash from suppressing it for so long was immense, and chisato's body became so sensitive that she would orgasm just from her nipples being touched. unable to control her desires, chisato crossed the forbidden line with her son that night and went to work the next morning with no bra, showing off her erect nipples.