Slimming Mature Woman, Slimy Lower Body: Gensaku Katori, a managing director at a certain bank, relentlessly criticizes the naked body of his secretary and mistress, Ayako Kimura. Young Ayako's body responds to the technique of this master, entrusting her limbs to her abnormal pleasure, arousing her greedy desire, and unfolding her shameful state. Ayako continues her current mistress relationship as Gensaku is divorcing his wife, Nenko, but she is frustrated that things are not progressing very well.