Unable to suppress the burning desire amidst the cold of winter. Unable to resist, the mother-in-law, who has been fiddling with her wet pussy with her fingers in the kotatsu, seeks her son's cock. The pleasure of being enveloped in the soft skin of a mature woman leads her to cross a line that must never be crossed. The two, returned to their male and female forms, are not satisfied with just the kotatsu and surrender themselves to lust, trembling in the fleeting forbidden love!
