Cosplay Roshutsu Kenkyuukai
Japanese title: コスプレ露出研究会
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Apr 22, 2011 to Jul 22, 2011
Duration: 19 min per ep
Rating: Rx - Hentai
Studios: Studio 9 Maiami
Producers: White Bear, Mediabank
Genres: Hentai

Aya, a waitress at a cosplay cafe, receives an E-mail asking her to go to an anime convention, for which she'll be paid as much as she wants, but with one condition: to obey all the males' orders. She ends up going out of curiosity, but the normal perversity among the otaku and her own dirty thoughts turn the photo session into an exhibitionism session. 

(Source: ANN)