Jukujo to shinjin kyonyû: Shitagaru seiho redi

熟女と新人巨乳 したがる生保レディ (original title)

Synopsis

Mitsuko, an insurance saleswoman who had maintained the top sales position, is now having her spot threatened by a newcomer, Risa, who has been rapidly improving her sales. When Mitsuko sneaks a look at Risa's contract data, she sees that it's all young men. In Mitsuko's mind, she sees a dark image of Risa using her large breasts to seduce young men...