Do You Like Big Girls? Manga Omnibus Volume 3 contains volumes 5-6 and features story and art by Goro Aizome.

The Hokuei Girls Volleyball team gets an upgrade when rambunctious twins and a princess join their ranks! There's barf-inducing cooking, upside-down undead, tainted bathwater, and more, including a special summer bootcamp. Unfortunately, camp is pricey! Will Ayano be able to use her own, uh, twins to make a little extra money–or a lot of extra money?