medieval european style brick world arab style clothing middle aged merchant black haired semilong high school girl selling white blazer

In a medieval European-style brick-built fantasy world, a black-haired semi-long high school girl in a white blazer and checkered skirt, which is her school uniform, sells them to a middle-aged unscrupulous merchant dressed in Arab-style attire. In exchange, she happily trades for a round crystal ball as big as she can hold with both hands, a witch-like black pointed hat, and a black, body-hugging dress.