A few years ago, a crisis caused by mankind broke out...
The real experimental materials in the "Ark" laboratory were discovered to be humans themselves. The so-called solutions to difficult cases were also experiments done on humans themselves...
Experimental Subject 1914 "Blood Crow" Experimental Subject 1530 "Snow Wolf" overturned the "Ark" laboratory with the power of two people, causing all the viruses in it to be released...
Infected with the virus... Either become a monster or... A person with super powers, but the chance of having one's own sanity is less than 1%...
Since then, a new era for the world has begun...