Heaps of Boobs - Mizuki Nishizawa

Kounosuke is a deadbeat, good-for-nothing living off his father's company dime and after his father is hospitalized, it's time for him to take responsibility! Kidnapped by his father's security team, he meets Rino, the busty bombshell who's also the company's head secretary who insists that he becomes the company's new President! Refusing to take the job, she offers to teach him how to be a proper leader, and that starts with giving up his virginity! Now behind the desk of his father’s company, four go-getting secretaries teach him everything to not only be a good leader, but a successful breeder!