Volume 20 is a special collection of side stories. First up, Yurika announces that she's quitting cosplay—or, at least, that's the impression the cosclub gets. Next, Sanae and Ruth do a little dream diving. After that, Maki confronts Theia about some unexplained expenses she's recording in the Satomi knights' ledger. Then lastly, Shizuka recruits the entire Corona House crew to help out with the cook-off at the cultural festival. The girls will cook while Koutarou judges, and the results are explosive to say the least.