France Shoin paperbacks — recognized by its signature black cover — was first published in 1985 and has since published over 2,600 books. In these times where erotic content comes in various formats like videos, manga and audio (ASMR), all of which are widely available on the Internet, this group competes with just printed erotic novels. Mashiro Oizumi, a newly hired female editor, gets to work in this veiled corner of the publishing world; but what awaits her there is a world of things that go beyond her imagination! The France Shoin Editorial Department's story is now available! (Source: France Shoin)

After defeating the Demon King, Yuuki, a hero who saved another world, finally returns to Japan, only to find that “dungeons” have appeared all across the globe. These dungeons, in addition to being filled with vast treasures and rare items, are infested by fierce monsters. At the same time the dungeons appear, “skills” awaken within the bodies of people on Earth, who are given the name "Hunters." Our protagonist, after returning from the other world, takes the Hunter exam and, after having obtained the “Carrier” skill, he registers as a low-ranked Hunter. Thus, Yuuki sets out to conquer the dungeons, making full use of the large number of items he brought back from the other world.