A bookstore's job is of course to sell books. In Denki-gai (Electric Town), the place where people who are true to their desires gather, even Ero-Hon (porn books) are valued goods! Here at Umanohone (Horse Bone), that sells everything from masterpieces to fanzines, a Ero-Hon lover comes in at full speed to check what's on sale—wait, no! It's actually an officer from the body that regulates naughty books - alias Ero-Hon G-men - creeping in! Love & Eros for All! There is nobody on Earth who doesn't need porn!!