A doujin circle pursuing the darkness (illness) of commercial series cosplayers. Ayaka-chan, a positive character who has entered the class area with the motivation of watching anime has registered! Due to her positive personality, she usually engages in healthy activities like sports, so initially, she didn’t like the sly and dirty gameplay of otaku and felt confused, but gradually she was captivated and began to sway her 103 cm bust, which is a masterpiece.