This time, the setting returns to the origin of schoolgirls, focusing on cotton material. During the schoolgirl years, fashion sense begins to develop, and various types of underwear start to appear. Yet, there's still a desire for cuteness balanced with a hint of maturity—which is why cotton was chosen. Even plain cotton can unexpectedly dig tightly into the body. The soft texture gently caresses the pussy, offering excellent comfort, while the fit is carefully adjusted to ensure deep coverage. Many girls appear with their pussy slit and the vertical line of the vulva clearly outlined from the cleft of their buttocks. Additionally, as schoolgirls walk up the stairs, swaying their hips, the shape of their cunts becomes strikingly visible. Under their pure yet erotic uniforms, these staircase schoolgirls present a special cotton-themed allure designed to capture your gaze.