Chu-Bra is an anime series that aired for 12 episodes in 2010 and based on a manga of the same name. After an embarrassing incident in which Nayu Hayama accidentally shows her underwear to the entire school, Yako Jinguji and Haruka Shiraishi investigate claims of her engaging in "compensated dating". Yako is small in stature, but her temper is large. Haruka is much bigger than Yako and is often teased about it. Upon concluding the investigation, they discover Nayu is an underwear monitor, paid to test all the latest underwear. A lot of the underwear is designed by her stepbrother, Keigo Hayama. Nayu then starts an underwear club to aid the rest of the students in all manners underwear. The main male protagonist is Hiroki Kamachi who must overcome his fear of underwear. The series goes on to address issues of puberty specifically relating to underwear. Nayu, Yako, and Haruka grow closer as friends and eventually have a falling out.