Four adult working women bare their hidden sex lives in private shoots. The lineup is billed as a catlike F-cup jewelry saleswoman, a classy office worker with a gorgeous ass, a pale and promiscuous architectural designer, and a soft-spoken illustrator who loses herself in the moment. The featured profiles include Amemura, a 30-year-old part-time housewife whose husband of eight years no longer responds to her advances; Sumikawa, a 27-year-old married office worker with hidden G-cup breasts, a submissive streak and an intensely sensitive body; Umi, a 27-year-old A-cup elementary-school teacher with extremely sensitive nipples; and Shishido, a 22-year-old H-cup cram-school instructor who loves being embraced from behind and having her huge breasts fondled. Their everyday jobs give way to hungry, uninhibited sex in Documentary Sex 5.