[China] Imouto wa Doujin Shoujo Cosplay Kei Ch.1-6 [biribiri]

A twintailed doujin-selling sister with glasses turns scarlet every time her onii-chan gets close, and with his commercial serialization debut making him the toast of the school's manga research club, her jealousy has plenty of fuel. Club-room cosplay sessions spiral from bunny-eared and cat-eared underclassmen sharing his cock in sloppy group blowjobs to the sister herself admitting that doing it at school is turning her on even more. The volume closes with an ojou-sama bonus story in which Haruka, a rich girl used to getting her way, hires a thousand-strong private security force to seal off an entire area just to secure the nakadashi she's been planning.