Enemies emerge everywhere. Stagnation starts seeming standard. Results require Ruthlessness. Joe has been moving deeper into his study of ritual magic, and further away from his combat team. He's learning more and more, but more often than not needs to choose between his research and squad leadership. Improving the town is a huge help to the guild, and they have been pushing to increase their power. Their rapid increases have not gone unnoticed. The guild receives an ultimatum, delivered by assassins and signed with blood. If they continue to accrue power and fame, each and every person with a grievance against the guild will come to smash the town back to square one. With tensions coming to a head, all Joe wants to do is leave it all behind and reach the next area. He flatly refuses the guild when they ask him to devise lethal options to use against the gathering army, but when the time comes… even Joe is unsure if he'll step into the limelight and show everyone exactly how Ruthless he can be.

For eons, conquering dungeons has been the most efficient way to become a strong adventurer. Although, not everything is as straightforward as it seems. Several questions have always plagued the mind of those that enter these mythical places of power: Why are there so many monsters? Where does the amazing weaponry and heavy gold coins come from? Why does the very air fill with life-giving energies?! Cal has all of the answers to these age old questions, for a very simple reason. He is a Dungeon Heart, a soul forced against his will into a magical stone. After several lonely years, Cal was able to regain sentience, allowing him to form new memories while slowly growing a dungeon around himself. With help from a friend, Cal learned how to create monsters and traps, increasing his power and size quickly. When a threat to his existence rears its head, Cal decides that he will do anything to stay alive and become stronger. Unfortunately for treasure-seekers, the fastest way for Cal to achieve his goal... is to eat anyone that enters his depths.