A restless, horny Japanese businessman, married yet yearning for forbidden pleasures, decides to push his boundaries with a week's worth of pent-up semen. Armed with a lifelike masturbation sleeve and a determination to outlast the clock, he sets off on a self-indulgent mission. His engorged, uncut cock slams into the tight, inviting tunnel, slick with lube, as he struggles to maintain control. The room echoes with his ragged breaths and the lewd squelching of his desperate, frantic strokes. As the minutes tick by, the tension builds, and the outcome hangs in the balance, promising a explosive finish.