The story revolves around Nayu Hayama, who embarrasses herself on the first day of middle school by accidental showing her adult panties. As two other students, Yako Jingji and Haruka Shiraishi, hear rumours of her having a 'sugar-daddy', they investigate. They soon learn that Nayu is an 'underwear monitor' who tests new underwear products, and has great insight on what underwear people should wear. Nayu hopes to help everyone get through the vital stage of their life by opening an underwear club.
An odd premise for a story... a group of girls( and one guy) that are obsessed with underwear and wanting to teach others to appreciate them like they do. It was cute, fan-service all over the place and in spots, showed the value of sticking to your guns... but with such a limited story to go with it, it just is good without being great.
The girls were cute, but predictable making it less that what I thought they could really do with the story.
What were they thinking when they created this series! Well it is original, but I don't think that is a positive in this case. However it's a cute, warm and fluffy series with lots of lingerie and that is about all I can say about it.