At Liliadrop, a high-end manufacturer of women's cosmetics, the staff is just as exceptional and glamorous as their diverse product line. Asako Yaeshima stands in stark contrast; formerly nicknamed "Aseko"—with "ase" meaning sweat—she suffers from an unusual condition of excessive perspiration. To manage this issue, Asako has established a morning routine: she blends various Liliadrop soaps with unscented deodorants to conceal her body odor. However, her attempts do not deceive Koutarou Natori, a genius fragrance developer at the company who possesses a sensitive and infallible sense of smell. Astounded by the combination of Asako's natural scent and the soap, Koutarou insists on sniffing her daily for a week. He aims to protect the company's reputation by developing new fragrances inspired by Asako. Given the high stakes, Asako agrees, though she never anticipates how close she and Koutarou will soon become.