Tanaka Hajime is a government-appointed sex counselor who uses hypnosis to convince women that sexual intimacy with him is a mandatory form of "guidance" for the benefit of their partners. In his first case, he targets the shy Obata Yui, conditioning her through provocative lessons in front of her boyfriend. As the hypnosis takes hold, Yui becomes increasingly dependent on Tanaka's guidance, eventually craving more sessions and engaging in "self-study" to please him.
Tanaka Hajime targets the arrogant Kurashiki Reina, who initially mocks his credentials as the school's government-appointed sex counselor. Using hypnosis to amplify her sensitivity, Tanaka systematically breaks her pride and forces her into total submission. The "guidance" culminates in a public display in the school restroom, where a completely broken Reina performs for a crowd of male students.
Tanaka Hajime utilizes his hypnotic authority as a sex counselor to manipulate Miyajima Sakura, the respected Kendo Club president. By convincing her that she needs "Pregnancy Experience Guidance" to prepare for her future, Tanaka leads her through a series of sexual simulations designed to awaken her maternal instincts. Through his deceptive guidance, he transforms Sakura's loyalty to her boyfriend into an obsessive desire to be impregnated by him.
After demonstrating "sex education" to the Kendo Club, Hajime turns his attention to Sakura's mother, Tsubaki. By manipulating her into believing that providing a live demonstration of conception is a mother's duty to her daughter, Hajime seduces Tsubaki and eventually draws Sakura back into the fray. The two women quickly succumb to his influence, competing with one another to conceive his children and surrender completely to his dominance.
Tanaka's role as a sexual advisor is put to the test when the mothers of his clients, Natsumi Obata and Reika Kurashiki, decide to personally evaluate his skills. While Natsumi is quickly won over by his prowess, Reika initially approaches him with hostility and suspicion. However, her attempt to prove Tanaka's incompetence quickly turns into a passionate encounter, leading her to demand a final "test" of his ability to fertilize her.
Tanaka continues his "sexual counseling" sessions, first helping Takamine gain confidence in her feminine appeal through a public display before the karate club. He then turns his attention to Yuu Nozaki, the lazy but beautiful "Sleeping Princess" of the Literature Club. Although Nozaki finds relationships troublesome, she quickly becomes addicted to the physical pleasure Tanaka provides, leading her to seek out his guidance daily.