Monster Island
As the world changes, humans gain the ability to transform into animal forms, divided by species into social classes: upper, middle, and lower tiers.
One day, an unexpected event occurs—Tian, born into the lower class, becomes caught in a horrific incident and is infected by a mutating virus.
This virus grants enhanced powers, transforms the host into a dangerous species, lowers their moral compass, and forces them to consume large amounts of blood and flesh to survive. However, by forming a blood pact, the infected can sustain themselves by drinking just a small amount of that person’s blood.
Soon after, mutated humans, driven by insatiable hunger, begin invading cities and harming people. The government keeps this a secret to avoid chaos, establishing a new city as a safe zone for only a limited number of people—exclusively the upper class.
The rest must survive in a city overrun by mutated humans.




