A documentary-style release featuring Komatsu An's first attempt at cervical stimulation. With her slender, married-woman figure, she arches her back and trembles in the genital area when her fingertips stimulate behind the bladder. When deeply penetrated by a large cock, she writhes in intense pleasure as her uterus is rubbed. Further stimulated with a drill vibrator while her cervix is lowered, she reacts sharply even to a vibrator pressed against her abdomen, resulting in powerful squirting. The film culminates in an extreme scene where the male performer, moving like a piston machine, relentlessly thrusts his huge cock deep into her ultra-sensitive uterus.