Galko Oohashi is the main protagonist of the anime and manga series 'Oshiete! Galko-chan' (Please Tell Me! Galko-chan). She is a high school girl known for her flashy appearance, especially her bleached hair and fashionable style, which leads many to assume she is a stereotypical 'gyaru.' Despite the misconceptions, Galko is kind-hearted, naive, and open-minded. The series humorously explores adolescent topics and misunderstandings, often centering around Galko's honest and curious nature as she interacts with her friends.