- Atsuko Kagami - known as "Akko Chan" is a 10 year old girl in elementary school. One day, a spirit of mirrors appears before her and gives her a magical compact. Akko uses it to become 22 years old (Haruka Ayase), and has a blast wearing the makeup that she adores and fashionable outfits galore. And if that weren't enough to make her wish she were really grown up, she even meets the man of her dream!
Her crush is Naoto Hayase (Masaki Okada), an elite manager at a famous cosmetics company. But his company faces a corporate buyout and is about to be taken over. As he strives to turn his company around by developing an innovative new product, Akko comes up with totally unexpected ideas to take on the crisis.
Will she be able to save the man she loves?