Yashiro is the seventh of the Mikura-class coastal defense ships (kaibōkan), as represented in Kantai Collection, named after Yashiro-jima, one of the Bouyo islands which are both part of Yamaguchi and Ehime Prefectures. Her artist is acea4, who also illustrated nameship of the class Mikura.
Yashiro has long brown wavy hair tied in a one-side-up hairstyle and brown eyes. Like Mikura, her outfit consists of an eclectic mix of Japanese and western clothing. Her top consists of a white sailor shirt with puffy short sleeves, a blue sailor collar, a distinct "bib" and a knotwork tie (similar to the Chitose-class) over a white undershirt. Her bottom is a red pleated skirt with hip vents. She also wears a sailor hat and white gloves. She mainly differs from Mikura by having blue knotwork rather than red, a pin shaped like a goldfish, white thighhighs and frills to her undershirt, gloves, sleeves, skirt and thighhighs. She also wears a hair flower to her left.