A perverted old man who is the embodiment of sexual desire and the epitome of filth devours a young office lady with little social experience as he pleases! Minami, who works as a secretary, has a crush on a senior employee, but the elderly president takes advantage of her feelings and gets a hold of her weakness! Minami endures the old man's sticky cunnilingus and raw insertion for the sake of her beloved senior, but before long, the old man's sticky training captivates her young body...