"Kimiko has just let slip that she's thinking about giving up cosplay. The news comes as a shock to Nagisa, who can't figure out why her friend would abandon their beloved hobby. But she doesn't have time to worry about it, because one of her coworkers has discovered her secret"--Back cover.

"First published in Japan in 2015 by Kodansha Ltd., Tokyo, as 'Complex age,' volume 5"--Colophon. Reads right to left in the traditional Japanese format. "A Kodansha Comics trade paperback original"--Colophon. Includes special extras at the end of the story.