Gintarou-san Otanonimousu

Satori Iwashita is impressed by the beautiful lady in the kimono who often visits the cafe where she works part-time. One day, the lady asks her to help with an exhibition. Satori is dressed up in a kimono, a glimpse into a world she never knew existed. There, she learns that the woman in the kimono is called Gintaro, a famous geisha from Kyoto. Satori is fascinated by this profound aspect of Japanese culture, including the kimono, and asks Gintaro to become her apprentice...?

(Source: Cocohana, translated)