When Sunao is told by her husband's boss that her husband is embezzling company funds, she is forced to wear nipple chains on her boss's orders in order to protect her husband. The weight of the chain pulls on her nipples, and she feels them rubbing while they remain erect, and her voluptuous breasts and nipples are relentlessly played with and twisted, developing her nipples. She can't resist her boss's titty-fucking while wearing a chain, making obscene clinking noises as her breasts sway violently, and soon she becomes a breasted masochist who wears nipple chains all the time and wants stimulation to her nipples... "For my husband...I offer these obscene nipples."