"Asakusa wants to create 'the greatest world' in anime through her imaginative images...but there's so much more to a world than just the visuals! And that's why the Eizouken trio has now become a quartet, as their newest recruit, Doumeki, sole member of Shibahama High's Audio Club, leads them on a new adventure into the wild to harvest ambient sound! And even as Kanamori tries to find a route for them through the minefield of social media and school regulations, Mizusaki and Asakusa are going to have to meet the fans in person at a local convention..."--Back cover.