A master well-versed in the world of karuta is holding a karuta class, advertised on a flyer. Ryo Yazawa, a married woman who enjoys karuta with her husband, decides to attend the class together with him. However, due to her slender build, Ryo has a persistent problem—her bra becomes visible when she leans forward. Conscious of men's gazes, she remains constantly on edge. Her husband notices her discomfort and wishes for her to become aware of it, but the issue remains unresolved, repeatedly exposing her to the eyes of others once again.