Performance art refers to an art form composed of individual or group behaviors at specific times and places. It is one of the modern art forms that emerged in Europe during the 1950s and 1960s. The most widespread expression involves using the artist's body as a medium, and the series "Oka zudara ke no Manbira Gokaichō Gakuen" is the perfect embodiment of this. The series is divided into various scenarios, including school campuses and offices, with character roles ranging from high school students to OL office workers. The only common element is that the actresses must maintain a posture with their vaginas open. The author admits that when I first saw this series, I was totally baffled, even finding it a bit awkward—how on earth do the actresses manage not to break character? But after thinking about it from a different angle, I realized that a person's biggest hurdle is themselves. As long as you overcome that inner shame and treat your genitals as just another element in artistic expression, it can be both erotic and art. That's why, in the luxurious office setting, it's packed with female employees enthusiastically masturbating—from singing the company song while opening and closing their vaginas, to developing new masturbation poses, holding new product meetings, and handling complaints—all of it unfolds in the rhythmic opening and closing of their labia!