Dungeon Kouryaku wa SEX de!! Vol. 1

Dungeon Kouryaku wa SEX de!! is a fantasy adult manga series that revolves around an adventurer or hero navigating a dungeon to defeat monsters and obtain treasures. The main character utilizes sexual activities as a method to overcome challenges in the dungeon, which is a significant aspect of the plot. The series blends traditional dungeon-crawling elements with explicit adult themes, making it a niche entry in the fantasy and adult genres.