Working as an innkeeper at a traditional Japanese inn, Haruko Akai (Naho Ueno) suffers from anorgasmia. One day, at the invitation of her friend Mama (Yoshino Hanaoka), she indirectly witnesses other people having sex. Despite being anorgasmic, this experience triggers a profound change within her. Afterward, Haruko decides to step into the spotlight and become the one being watched. Her trial to overcome anorgasmia begins—RUBY presents "Showa-Era Housewife Cinema," featuring married woman Milf Naho Ueno in a creampie story.