Wakana Gojou, a high schooler, spends his days mastering the art of creating hina dolls, aiming to match his grandfather's expertise. Unlike his peers who are fascinated by pop culture, Gojou finds solace in designing clothes for his dolls. He keeps his unique hobby concealed, dreading the thought of being ridiculed. Marin Kitagawa, a stunning and confident girl, is poles apart from Gojou in terms of personality. It is unexpected when she approaches the introverted Gojou and extols his sewing talent. She shares her interest in cosplay and asks for his help as her sewing skills are lacking. As they collaborate on numerous cosplay outfits, Gojou and Kitagawa's relationship brims with closeness, although their lives are vastly different.