Momo Shiraishi comes to the spa for a couples massage trial. However, the masseuses are all perverts at this shady establishment! Her nipples, made extra sensitive by the aphrodisiac oil, are kneaded relentlessly, and she has to stifle her moans to avoid her boyfriend finding out. She's trapped in the perverse game of a couples massage where they're separated by just a sheet, enduring intense pleasure. After experiencing the bliss of nipple play, Shiraishi can no longer resist, eventually giving in to a cheating, raw sex session. A mix of guilt and tension fuels this silent NTR.