* A steamy western fantasy city with a strict hierarchy. The upper level is the glamorous tower of nobles and mages, and the lower level is the dark slums. There is plague, hunger and crime, and there are more rats than people.
*Core mechanism·Rat colony symbiosis:
* Growth feedback (physique): The mouse becomes stronger by devouring food or metal, and the protagonist simultaneously obtains □□ strengthening (strength, speed, ability to withstand blows).
* Reproduction and feedback (spiritual): The larger the number of rats and the faster they reproduce, the stronger the protagonist's mental power and perception range will be, and the higher the upper limit of individuals that can be controlled at the same time.
* Death Feedback (Energy): The moment the mouse dies, its life essence is converted into "gray mist energy". This energy can be used to instantly heal the protagonist's injuries, strengthen the next attack, and even be used directly to catalyze new mutant rat eggs.
* The protagonist turns the most hated rat in the slums into the most terrifying weapon. In the sewers and shadows, he is both the owner and the only king of the rats. What the enemy sees as "rodent extermination" becomes a feast for the protagonist to quickly gain energy.
Intention: to call