Dungeon no Osananajimi manga, Dungeon’s Childhood Friend Dungeon x Childhood Friend!?Let’s watch over them, in this warm romantic comedy!At the bottom of an impregnable underground dungeon awaits the final boss, the mighty black dragon Obsidian. The one who dared to challenge Obsidian is Van, an experienced adventurer who has fought many battles with the dragon over the years.The battle between two passionate souls is about to begin!