Class no Inkya Busu?... Jitsu wa Cho Bijin Cosplayer Datta
クラスの陰キャブス？･･･実は超美人コスプレイヤーだった。みんな知らずに馬鹿にしてるけど。
Akira Hazama is a high school student who appears lively and normal at school, concealing his otaku interests. Outside of school, he attends a doujinshi convention, where he experiences a significant encounter. The story spans 11 original chapters, later condensed into six for publication in Suiyoubi no Sirius.