Chu-Bra!!
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Ch.-Bra!! (.....!!, Ch. Bura!!?) is a Japanese manga series written and illustrated by Japanese manga author Yumi Nakata. The manga was first serialized in the Japanese seinen manga magazine Comic High! on January 22, 2007, and is published by Futabasha. An anime adaptation began airing on January 4, 2010 in Japan.[1] The anime is also being streamed with English subtitles on the Crunchyroll online video service in North America, Australia, New Zealand and the United Kingdom.

The story revolves around Nayu Hayama, who embarrasses herself on the first day of middle school by accidentally showing her adult panties. As two other students, Yako Jing.ji and Haruka Shiraishi, hear rumors of her engaging in "enjo k.sai", or compensated dating (which often is viewed as being close to or the same as prostitution), 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.