Dr. Sawaru Ogekuri is the eccentric and perpetually enthusiastic director of the Ogenki Clinic, a specialized medical practice in Tokyo dedicated to resolving a wide array of sexual dysfunctions and peculiar fetishes. His name serves as a clear indicator of his role, roughly translating from Japanese to a phrase meaning someone who fondles or palpates female pubic hair. Physically, he is often depicted with a distinctly phallic-shaped head, a visual gag that underscores the series' unapologetically crude and surreal sense of humor.

Personality-wise, Dr. Ogekuri is characterized by a goliardic, carefree, and almost manic dedication to his profession. He approaches every case with an insatiable appetite for sexual experience, viewing his work not just as a job but as a personal mission. He is firmly convinced that the progress and happiness of society are directly linked to the ability of its citizens to embrace and enjoy a fulfilling sex life. His personal libido is exceptionally high, and his curiosity extends to all forms of sexual expression, leading him to be depicted as seemingly bisexual and eager to try any experience the human body can offer.

In his role at the clinic, Dr. Ogekuri acts as a brilliant if unorthodox troubleshooter. He treats a vast spectrum of conditions, including impotence, premature ejaculation, paraphilias, and deep-seated psychosexual traumas. His therapeutic philosophy is rooted in demystifying sex, often using absurd humor, visual metaphors, and direct experience to cure his patients. For instance, he might compare sexual intercourse to a pinball game or use strange analogies involving rockets and firearms to explain sexual function. He is a firm believer in hands-on treatment, frequently using his own body and that of his nurse as living demonstration models to illustrate techniques. When a psychological barrier is the issue, he may devise elaborate and structured sexual challenges for the patient to overcome, serving as a form of exposure therapy.

The most significant relationship in his professional and personal life is with his assistant and head nurse, Ruko Tatase. She is both his partner in treating patients and a frequent participant in his unconventional therapeutic demonstrations. While they work seamlessly together as a team dedicated to their patients' well-being, Dr. Ogekuri can also display a competitive streak. This is particularly evident in his interactions with individuals who possess similar levels of sexual stamina or unique prowess, such as a character named Yumeko Ranmaru. Such rivalries can sometimes complicate his professional dynamics. The clinic itself operates on a flexible payment system, with Dr. Ogekuri reportedly willing to accept unconventional forms of compensation, including sexual favors to a landlady in lieu of rent.

Among his most notable and bizarre abilities is the literal anthropomorphism of his own penis. In a recurring piece of visual comedy, his genitals are depicted as being colossal in size and possessing a face that mirrors his own expressions, effectively acting as a separate character with its own personality. This surreal physical trait is emblematic of the series' blend of eroticism and absurdist humor. As a character, Dr. Sawaru Ogekuri exists as a static force of nature; no information is available regarding his origins, medical training, or any personal development he may undergo across the series, as he remains a consistently single-minded and unchanging figure.